The XL4+ also makes an ideal stage regulator

The pneumatically balanced valve provides superior performance for an alternate air source

Constructed with the usual

Four medium-pressure ports all mounted on a rotating turret

or scaled down to make a travel friendly set up suitable for any diver

rk4 dive fins AccessoriesSafety The XL4+ also makes anConserve energy with this compact, wide blade technical fin. Providing outstanding maneuverability in confined spaces and overhead environments, the RK4 also delivers optimum performance in open spaces. Suitable for use with both wetsuits and drysuits, the RK4 fins are perfect for frog kicking and back finning.