Model HC-300 Hole Cutting Tool is designed to cut holes up to 3" diameter into steel pipe. The HC-300 features a 1/2" capacity chuck to accommodate all size of holes up to 3" diameter and standard hole saw arbors up to 7/16" Hex (1/2" chuck size). An integral motor and gear reduction optimizes the performance and saw life in the capacity range. A single feed handle and ON/OFF switch allows for easy operation. The compact two-piece design allows the HC-300 to be used in tight quarters and difficult-to-reach locations. Specifications Motor: 1.2 HP. Chuck speed: 360 rpm Hole capacity: 1/4~3" Drill chuck capacity: 1/8~ 5/8" Pipe clamping capacity: 1 1/4~8" All jobber drills and hole saws available on supply. Integral arbor hole saws recommended over 2" diameter.