Use the Malco Redline Hole Punch (HP18KR) when working overhead to pre-punch rivet holes in suspended ceiling grips. It is also designed for any edge allocation including making holes in window extrusions, metal ductwork or sheet stock. Compound leverage increases one hand mechanical advantage 8 to 1. Spring return handles allow quick setup for repetitive applications. Stop gauge permits adjustments from 1/4" to 1 1/8" increments. Punch and die are easily replaceable or changed from standard 1/8" hole size to 3/16". Punch and dies are constructed for high quality tool steel used in commercial high production punch press dies. Body of tool consists of lightweight aluminum die cast `C` frame and rust resistant nickel plated steel handles and parts. Tool also features non-slip vinyl grips with hand stops for added comfort and resistance to elements. Compact enough to fit in any tool box or punch.