The EZE Castrator clips are made from strong aluminum and are for use with the EZE Castrator Model T-1 (#22850). Each application requires an aluminum clip and latex castrator band that work together to cut off the blood supply to the scrotum. Band castration tools are bloodless and a safe alternative to other methods that create open wounds and risk infection, but should be accompanied by tetanus vaccination. Latex bands and EZE Castrator are sold separately. | Wadsworth Manufacturing EZE Bloodless Castrator Clips | Size 50-Pack