VEVOR Hydraulic Knockout Punch Kit, 4 Pieces 1/2", 3/4", 1", 1-1/4" Conduit Hole Cutter Set, Metal Sheet Driver Tools, KO Tool Kits For Aluminum, Brass, Stainless Steel, Fiberglass and Plastic 4 Dies & Punches Set Select Suitable Size Slug Splitting Design How to Punch a Hole Guaranteed Quality Workmanship Wide Application Number of Dies: 4,Model: SYK-8T-15T,Material: 40Cr Steel,Conduct Size: 1/2", 3/4", 1", 1-1/4",Thread Stud Specification: M20X1.5 & M10X1,Item Weight: 2.1 lbs/ 0.95 kg