Electricians and metalworkers - this hydraulic knockout punch set makes clean, professional holes in seconds! With 8 US ton punching capacity, it handles 1/8 inch steel and 1/16 inch stainless steel with ease. The kit includes 6 die sets for conduit sizes: 1/2, 3/4, 1, 1-1/4, 1-1/2, and 2 inches. Compatible with Greenlee and other 3/4-16 thread punch tooling. The hydraulic operation requires less physical effort than manual punches - just pump the handle and watch it cleanly punch through metal, plastic, or fiberglass. Comes with two draw studs (7/16x3/4 and 3/4x3/4), spacers, and a sturdy plastic carrying case to keep everything organized. Perfect for electrical work, automotive modification, construction, or any application where you need precise, burr-free holes. The long plastic handle gives you good leverage and comfortable operation. Much faster and cleaner than drilling or cutting holes manually - this professional-grade tool pays for itself in time saved!