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Blacktech Normal spearfishing and freediving carbon fins with Omer Stingray footpockets

10 days


Designed for coastal and surface swimming and also ideal for indoor or outdoor pools, these fins have proven themselves to be extremely kind on a diver’s muscles and joints even whilst diving for up to 5 hours at a time.



A revolutionary new design and structure of fin with variable blades, harder around the foot at the top and softer at the end towards the tip. Our ultimate carbon layer positioning inside each blade created using the latest LASER technology ensures that every blades is almost identical. The power and feedback from each kick allows for continuous fluid movement without any dead spots even during vertical assent; they offer the ultimate feedback of nerve and speed.


Fibres: high-tensile carbon and fibreglass wich makes the blades more silent

Resin: specially formulated epoxy resin used in marine and general industrial composite areas. All systems are Germanischer Lloyd approved.


BLACKTECH water rails with variable height and high efficiency designed to decrease all the turbulence in bending phase made of special rubber highly resistant to abrasion and which allows blades’ high reactivity and efficiency. They allow higher stability and better handling underwater. These water rails come in a recognizable red colour.


Blade tips are shaped to give the maximum amount of thrust with the smallest amount of energy consumption.


Much attention has been paid even to the smallest details in the aesthetics of BLACKTECH fins and blades, including their high-end finish. The extraordinary mirror surfaces of our blades both front and back is BLACKTECH’s unique difference. Waterrails are red. Modern and attractive designs are used throughout. We offer everything you need to fall in love with your fins.


Advanced VRTM (Vacuum Resin Transfer Moulding) technology is used in the production of BLACKTECH carbon fibres blades, high temperature and high degree of applied vacuum, which lead to a component with 0% void level, without defects, with a uniform matrix/reinforcement ratio across the whole blade. Constant ambient temperature and humidity is used in compliance with the most demanding and modern standards. The blades are subjected under 14 hours post curing process in temperatures controlled through PLC (Programmable Logic Controller) with a deviation of less than ± 0,1°C in the chamber.


3 years of written warranty on breaking.


BLACKTECH is the official sponsor of the Croatian national spearfishing team.

Hardness                 Weight kg (lbs)

SOFT                         50 kg (110 lbs) to 70 kg (154 lbs)
MEDIUM                  70 kg (154 lbs) to 85 kg (187 lbs)
HARD                        85 kg (187 lbs) to 105 kg (231 lbs)


Length overall = 812 mm (31.97 “) for Mares Razor footpockets

Length overall = 814 mm (32.04 “) for Omer Stingray footpockets

Length overall = 790 mm (31.10 “) for Pathos footpockets

Length from the bending point = 667 mm (26.26 “)

Width = 190 mm (7.48 “)

Angle = 22°




Please note that Freediving and spearfishing are inherently dangerous sports and should only be undertaken by experienced, well-trained divers. More powerful spearguns must be fired with two hands and a locked elbow to prevent injury from excess recoil. Do not load or unload your speargun out of the water, treat every speargun as if it were loaded. Never point your speargun at anything you do not intend to shoot. Before you begin your dive, be sure to check all your gear. You should never dive alone and your equipment should be serviced regularly. You should always plan your dive and dive your plan. You should discuss safety precautions, your plan, and contingency plans with everyone onboard BEFORE you dive. Communication among divers and operators is imperative. Failure to adhere to these guidelines could potentially result in physical harm or death.  Blue Tuna Spearfishing is not responsible for any loss, damage, harm, or death caused by using any of our products.