Greenlee 1731 Portable Hydraulic Knockout Driver.
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Greenlee 1731 Portable Hydraulic Knockout Driver. High-pressure hydraulic ram designed for punching holes in mild steel up to 10-gauge. Requires a separate hydraulic pump and hose for operation. Features a compact design for use in tight spaces. Compatible with all Greenlee knockout punches and dies. Includes a 3/4-16 threaded piston for use with standard draw studs. Constructed from high-strength steel with a corrosion-resistant finish.
