HTM-1 Hole Through Middle Fender 6 x 15 – Black. In keeping with the Polyform tradition of quality, the HTM (hole through middle) fender was designed to provide maximum protection in a wide variety of applications. Vertical ribs for extra protection, reinforced tube ends to prevent lines from being pulled through if the fender gets caught in a tight spot, and extra wall thickness to resist punctures and tears are just a few of the features this high quality fender has to offer. Like our G-Series, this style fender is available in fourteen colors, ready to beautify as well as protect your boat., Features: Even wall thickness for maximum strength , Molded in ribs for strength and abrasion resistance , Reinforced tube ends , Designed for use in medium duty applications in both permanent protected and unprotected moorings , Offered in 14 colors to suit any vessel: Black, white, gray, classic red, burgundy, sand, forest green, teal, blue, cobalt, navy, purple, yellow and orange , Unique Polyform valve for years of service , Size: 6 x 15 in, Tube Diameter: 5/8 in, Circumference: 18.8 in, Buoyancy Ratings: 15 lbs.