This pole base makes installing your boat cover quick and easy. With the ability to swivel and hold the pole in place, you no longer have to climb in and out of your boat as you install your cover. The thermoplastic rubber gives the pad a firm grip, it's large base protects your flooring from damage caused by standard crutch tips and helps disperse the poles weight. Unlike our Pole Base w/support pole, this unique four-piece design with locking wing nut ensures that this base will never end up at the bottom of lake. Guaranteed to fit on Vico Marine's support poles only.