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Hunt Master

Hunt Master Inverted Roller Head - Woomera

Hunt Master Inverted Roller Head - Woomera

Regular price $65.00 AUD
Regular price $70.00 AUD Sale price $65.00 AUD
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1. The Woomera Invert Roller Head:

A ‘Woomera’ is a wooden Australian Aboriginal spear-throwing device that offers added leverage and thus power. Similar to an atlatl, it serves as an extension of the human arm enabling a spear to travel with a greater speed and force than possible with only the arm

The Huntmaster Speargun Compound Inverted Roller Head is a modern day ‘Woomera’, enabling a speargun shaft to travel at a much greater speed and force than possible with the 'traditional' open head muzzle speargun.

2. Why choose the ‘Woomera’ Invert Roller Head?

Invert roller guns are the equivalent of compound bows in archery when compared to a traditional bow. Compound rollers and an enhancing stringing system on compound bows produce more power, efficiency, accuracy and reduce recoil - and the same is true of Invert Roller Heads.

Spearguns that use an Invert Roller head mechanism have shot many a world-record fish, the design providing a massive advantage over other conventional spearguns when targeting larger species. Additionally, when loading a large number of rubbers the Invert Head design doesn’t place strain on the handle and your hand when firing.

In short, if you want to power-up your speargun and get greater accuracy and efficiency - whilst reducing recoil - then look to an Inverted Roller Head.

3. A New Design:

The ‘Woomera’ Compound Speargun Inverted Roller Head was innovated to solve many of the issues of previous invert rollers - and we wanted one, new and unique design.

When designing this head, our team of advanced divers and spearos sat with our engineers and manufacturers for weeks on end to fine-tune what was needed for the ultimate roller head - and they came up with the Woomera.

We wanted an Invert Roller Head that could be an ‘all rounder’ - a head that (i) can hold hundreds of kilos of pressure; (ii) be used for single- or double-flopper shafts and (iii) adapt to alternative powerband and rigging setups according to what fish species we are targeting.

4. Key Design Features:

  • Twin rollers that make the speargun easier to load and add more powerbands - tested satisfactorily with up to ten (10) 16mm powerbands.
  • A 26mm barrel plug with removable rubber seal that can be used to fit many different guns on the market.
  • Sleek and compact design with a horizontal hole between the rollers and the plug to allow for extra rubber kickers when setting up rigs for very large fish.
  • Embedded underslung anchor point to tie off your speargun muzzle bungee or feed through a reel line.
  • Protective “arches” to cover the rollers, ensuring that lines attached to the shaft don't tangle or get in contact with the rollers whilst firing the speargun, ensuring smooth operation underwater.
  • Made using state-of-the-art CNC/CAD design with special injection moulding, making each stage of the production process precise and consistent.

5. The Materials:

  • A mixture of marine-grade stainless steel and cutting-edge injection-moulded  plastic resins.
  • High tensile plastic mixed with over 32% carbon, making it both stronger and lighter in weight - perfect for the high pressures of added and thicker powerbands.
  • Marine-grade stainless steel for all metal parts used.
  • ‘Self-lubricating Teflon washers’ embedded behind the rollers reduce friction whilst firing your speargun.
  • Wheel finishes in a Black design with six holes, or Blaze (orange), Blue, Green, Grey, Pink and Red wheels - matching to our WIGUN speargun and BURNUM wetsuit camouflage colourways.

6. Dimensions:

  • Diameter of Barrel Plug = 26mm
  • Length of Barrel Plug = 30mm
  • Wheel Diameter = 30mm
  • Shaft Slot Width = 7.5mm
  • Overall Length = 87mm
  • Wheel screws can be adjusted using a T10 Torx Bit.

7. In Summary

The Woomera Inverted Roller Head has been tested by the Huntmaster team and sponsored divers, focusing on large game fish like Marlin and Tuna where a quick kill is desired and a powerful shot is required to ensure thorough penetration.

The Woomera Inverted Roller Head passed all tests with flying colours, proven to hold up to TEN 16mm rubbers, showing ultimate durability and strength with no cracks, weak points or failing components.

Want to power-up your speargun? Look no further than the Woomera Inverted Roller Head...



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International Shipping

For all offshore islands and international orders, a member of staff will contact you with a delivery estimate including International freight charges. Please contact customs or your local postal service as your order may be delayed for inspection or duties/taxes may apply which are not paid for by Infinity Dive. This is applicable to all international shipping methods.

Duties and Taxes

International purchases are sold free of Australian GST. However, depending on which country the items will be dispatched to, there may be additional taxes or import duties imposed at the receivers end. Infinity Dive is not liable for these charges and it is up to the customer to liaise with the Customs regarding their delivery.

Out Of Stock Policy

We will get in touch with you if the product was out of stock.

If the product was out of stock in the entire Australia, the delivery time may over 2 months.

Its depends on the ETA provided by the Brand Agent.

Cancellation Policy

Order cancellation
We move fast to get our orders packed and dispatched as fast as possible. If your order hasn't already been dispatched, we should be able to cancel your order.
  • Please note that some orders may not be able to be changed or cancelled once the order has been accepted by infinitydive.
  • If you need to cancel an online order that has not yet been shipped, please contact us.
  • No order shall be binding until it is accepted by InfinityDive. An individual contract for the supply of Products, on these policies, is formed on acceptance by InfinityDive of an order from the Customer.
  • InfinityDive reserves the right to accept any order in whole or in part. Where we makes a part delivery of any order, such delivery shall constitute a separate contract. No order may be cancelled or varied after acceptance by InfinityDive.

In-store pickup policy

In Store Pick up orders will be available for collection in store for a period of 1 month if the product is in stock;  if the order isn’t collected by this point, $10/day storage fees may apply unless a prior arrangement is made with InfinityDive.
Trip / Event cancellation policy
No refund for cancel request made less than 24 hours.
      Courses cancellation policy
        1. There will be a payment deadline announcement to all participants, no late fee will be accepted.
        2. If you cancel or transfer your course due to personal reasons, you need to pay an administration fee starting from $98, which will incur within the paid fee.
        3. If the new course is of a higher value than the original booking, the difference must also be paid. No exceptions.
        4. If special circumstances or ocean conditions cause the necessary cancel on activities of the day, our students or participants who paid will get the fee convey into credit point. No direct cash return.
        5. If any paid fees are cancelled after 14 days due to personal reasons, the full payment will be converted into company credit points. If cancelled 7 days before departure, fee will refund by 50% deducting from the conversion payment company credit points. If the payment is made within seven days before departure, there will be no refund.
        6. Before payment for any activity or course, the company reserves the right to change the price, and participants must take the initiative to confirm the relevant changes.
        7. If an emergency medical condition manifests within 24hrs of your course start time, proof must be provided in order to transfer your course at a reduced rate depending on the case.
        8. If you have indicated yes to any of the questions on our dive conditional from, then one will need to be provided at the time of booking or 14 days prior to the course start date. Once you are fit to dive unconditionally, cancellation procedure will apply the above conditions. Failure to do so will result in forfeit of the course and rebooking will be at full cost.

        Special Conditions

        Special circumstances will deal in case-by-case manner as such medical conditions, verbal instructions, unconditional payment, etc.

        Credit points

        The credit points of the company after the refund can be purchased for any consumption within the company, and it will take effect forever indefinitely.



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      Thank you very much for your understanding!

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