Polyform Slalom Anchor Buoy Green #218WS1GRWS1 Series. Made of high quality PVC and featuring a strong ropehold, this buoy is built to last for a long time. Add in the S1's for use as boat path markers and you've got the ultimate in course markers. FEATURES: Meets official American Waterski Association specifications for record capability tournaments. Multiple colors to mark both ski and boat courses.Size: (Diameter x Length) 8" x 8.5"Eye Diameter: 3/8" More