Master your jobs with speed and accuracy with the Greenlee 1/2" Conduit Size Slug-Buster Knockout Punch (catalog number K2P-1/2). Designed for plumbing experts, this versatile punch tool makes it quick and easy to punch conduit up to 1/2" (0.89" or 22.5 mm.) in size to create clean, precision holes every time. It's optimized for mild steel and has a limited stainless steel capacity, and it can also punch a wide variety of other materials including brass, copper, aluminum, fiberglass, and plastics. With user-friendly features, the Slug-Buster has a unique punch profile that effortlessly splits slugs to allow for easy slug removal to help you get the job done faster than ever, and the ergonomic knurled edge provides a comfortable, firm grip for ease of use. Additionally, the hole puncher is designed with easy-to-read laser markings for quick, convenient part identification. This knockout punch can be used with Greenlee battery-hydraulic knockout drivers, manual-hydraulic knockout drivers, or ratchet wrenches as well as Greenlee dies and draw studs for a superior performance. Greenlee: Professional. Nothing Less.™