For punching holes in mild steel, stainless steel, aluminum, brass, copper, fiberglass and plastics For use with all Greenlee hydraulic (manual or battery) drivers Knurled edge on punches for better grip Knockout set features new die design optimized for widest range of materials and drivers Laser markings for quick part identification. Alignment markings for improved accuracy Easy threading – draw studs with “dog point” tip helps eliminate cross-threading. Hex key access for easy removal from tool. Made in the USA
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