This is the Koah 5/8 Diameter Power Band Speargun Replacement Bands Hand-Tied Features: Made from the highest quality latex rubber Always black over amber to provide the highest elasticity as well as UV protection All Koah Power bands are individually hand tied Diameter: 5/8" Koah&';s attention to detail on their Powerbands insures you the highest longevity of your investment. Wishbones are constructed of 1000lb triple core dyneema to provide you with the strongest possible resistance to abrasion. All Koah Power bands are individually hand tied. Power bands are guaranteed. If your wishbones ever pop from the latex rubber, Koah will replace it with two.