Edge guards or tip protectors are made from a somewhat hard plastic that either fits well because it is made for the chisel or it doesn't fit and slips off. Our AUKTools Silicone Chisel Guards are made from soft silicone. They will fit over practically any chisel, stay on and actually protect the chisel's edge from hard knocks. Features Soft silicone chisel edge guards go on and stay on Protect edges against 'hard knocks' Fit chisels from 3mm to 33mm Includes 2 x 3mm-7mm 2 x 9mm-13mm 2 x 15mm-20mm 2 x 22mm-27mm 2 x 27mm-33mm