The VAP VOODOO crossbow bolt was ahead of its time, by about a decade It's revolutionary micro diameter construction coupled with Rail Rider technology allowing it to be shot from virtually any crossbow with a conventional rail, and its weight forward design meant it could punch through anything in its path With the improved SHOKTL outsert and reconfigured vane offset Now ten years later, the VOODOO-SS builds on a decade of success to create the world's best penetrating bolt with stainless steel mesh woven into the carbon for extreme durability 166" ID micro diameter carbon shaft Spine aligned for increased accuracy Ice Nano Ceramic coating along the carbon improves penatration and allows for easy removal from targets Specifications: Length: 20 inches Total weight: 315 grains Insert weight: 50 grains Shaft ID: .166" Shaft OD: .241"