PLASTIC RING WITH SMALL SLEEVS OVER THE FLOATING RING. DIMENTIONS ARE 1-1/4" DIAMETER PIPE CONTOURED TO MAKE ONE 16" DIAMETER RING, AND 36 PIECES OF 2" DIAMETER PIPE BY ONE INCH LONG SLEEVES. MADE OF GRADE 40 PVC PLASTIC PIPE WEIGHING 2 1/2 LBS. USED TO KEEP THE WOODEN OR CONCRETE MARINE PILE FREE OF VEGETABLE OR ANIMAL LIFE FROM ATTACHING THEMSELVES, AND EATING AWAY AT THE PILE. THE AREA THAT IS KEPT CLEAN IS BETWEEN THE HIGH AND LOW TIDE WATER MARK. THE RING GOES UP AND DOWN WITH THE TIDE LEVEL. THE SKIN FRICTION BETWEEN THE 36 SLEEVES AND THE PILE IS CONSTANT, BRUSHING THE PILE, AND KEEPING IT CLEAN AT ALL TIMES.