These pliers are for use on PLASTIC ONLY. They are designed to cut off excess bushing legs prior to mounting lenses. They are also used to cut off the bushing in order to remove the lenses on bushing type eyewear. DO NOT USE ON METAL! This could damage the jaws which could lead to scratched lenses. Made of hardened stainless steel and include vinyl grips for added comfort. FREE SHIPPING ON ALL ORDERS OVER $35.00!