FeaturesManual knockout sets with unique 3-point cup cutting surface provides a clean, quick and easy cut, saving time and moneyOptimized designSlug splitting punch features in an economical manual ball bearing designCuts through 10 ga mild steel as well as aluminum, fiberglass and plasticPunches and dies may be used with Southwire MPR01SD ratchet drivers and MP-01PRO or M360HP hydraulic driversBall bearing 7/16 in and 3/4 in draw studs for reduced frictionCup design creates crimping effect on slug for easy removalOptimized design reduces wrench effort