A truly evolved slip tip, EVO uses aerospace heat treated 17-4 stainless steel for the tip, injector,rod and the cable. The diamond cut hex-tip is streamlined with 3 slicing grooves allowing easy,penetration without tearing the flesh. Injector rod screws into hard anodized aerospace aluminum,fittings and locks in with a hex-screw. Heavy duty stainless steel cable rated to 430 lbs. Also available,with dyneema (rated to 450 lbs). Viton o-ring (several times stronger than silicon or rubber) holds the slip tip cable/dyneema in place. Comes with hex wrench and spare viton o-rings.