The environment that an RK3 is used in will tend to dictate the size of fin that you need

This popular regulator has four medium-pressure ports all mounted on a rotating turret

Single cylinder wings

Durable and weatherproof

Stay warmer for longer and extend bottom times with even heat distribution that increases body temperature by an average of 2°C

2 gauge console pressure and depth AccessoriesRegulator Accessories The environment that an RK3The 2 gauge console combines a submersible pressure (contents) gauge and a depth gauge housed in a specially designed case. The unit is completed with a high pressure hose. The console clearly displays your pressure and depth readings for easy viewing under water and the dials have a long phosphorescent effect for better reading in poor visibility conditions. The submersible pressure gauge provides accurate pressure readings with a range of 360 bar