Custom Float for Subal Focusing Macro Port, Nikon 105 VR We consider the N-S105 one of our finest float designs. It is sized to fit precisely over the Subal Focusing Port for the Nikon 105 VR lens and provide the buoyancy needed to balance this heavy setup. Fastens quickly and securely by a EPDM elastic ring. Made of our nearly indestructible high density foam, but it can be easily cut with a knife or saw to accommodate a Macro Mate or other lens accessories. The N-S105 provides 1.2 lbs. of lift.