Pool Safety Rope and Float Kit 170 Feet 1 2 Inch Red and White Rope with 3 x 5 Inch Locking Floats watts_300 This 4 inch anti vortex plate This 4 inch anti vortex plate prevents the formation of a vortex and subsequently air entrapment into the pump by forcing any emerging vortex to go around a plate and then into the suction pipe ) The underside ribs of the board are protected from direct contact with the Durafirm metal fulcrum by rubber channels (8) attached to the board with epoxy adhesive This keeps swimmers away from areas that may be too challenging or dangerous for them Our pool safety rope and float kits are pre assembled with all of the floats already on the rope with hooks at each end