Effort Saving Levers Design: 13 inch long handles with levers transmission structure reduce operating force, replacing rivet for faster frame connection and construction efficiency Industrial Grade Durability: Sturdy metal construction weighs 780g with 320mm total length, built for frequent use in demanding construction environments without deformation High Hardness Alloy punching: Features a high frequency quenched alloy steel punching for excellent durability, creating holes in ceiling and partition frames with efficient, stable accuracy Hole Specifications: 10mm hole diameter fits standard light steel frames, accurate positioning and strong connection for ceilings and partitions Anti Slip Rubber Grip: double color rubber coated handles with textured surfaces ensures a comfortable, nonslip grip, minimizing fatigue during prolonged use for safe operations, Manufacturer: Tsophreniq