Features: 1.Practical Hand Tool: With the rivet nut tool, the 12in rivet nut can be easily removed by hand for easy replacement or maintenance of the mandrel. 2.Premium Material: Rivet nut tool mandrel is made of chrome steel, heat treated at 40C, and the arm is made of 45 carbon steel to prevent deformation. 3.Labor Saving Design: Ergonomic handle for a comfortable grip, maximizes leverage and requires less effort than common rivet nut tools. 4.Package Included: Hand rivet nut tool set includes rivet nut tool, M3 M4 M5 M8 screw and nut, plastic box, wrench, 50 accessories, manual. 5.Easy Storage: All accessories are packed in a blow molded carrying case to prevent movement and scratches for easy storage and portability. Specification: Item Type: Rivet Nut Tool Set Material: Chrome steel, carbon steel Maximum Working Stroke: Approx. 9mm/0.35in Maximum Working Effective Stroke: Approx. 7mm/0.28in Maximum Arm Multiple: 25 times Application: Universal