Features Durable Construction For Longevity: Thickened high carbon steel handle ensures robust performance, while the energy-saving bending helve design minimizes effort during use Enhanced Strength Through Treatment: High-temperature treatment of key components provides exceptional sturdiness, making this tool reliable for various heavy-duty tasks Ergonomic Design For Comfort: The handle is designed to fit comfortably in your hand, reducing fatigue and preventing slippage during prolonged operations Time-Saving Manual Rotation: Equipped with a manual rotation back device, this tool allows for quick adjustments, making your work faster and more efficient Versatile Compatibility Options: This kit includes tips suitable for M3, M4, M5, and M6, making it a practical choice for a wide range of industrial hardware applications Features: 1、Come with thickening high carbon steel handle, with energy saving design of bending helve 2、Adopt high temperature treatments for spear parts, sturdy, strong, and practical 3、Handle using ergonomic design, comfortable and won't skid when operate even for a long time 4、Provide manual rotation back device, help you to save time and effort, quick and convenient 5、Rivet nut gun kit applicable tips for M3, M4, M5, M6, very practical and convenient to use Specification: Item Type: Rivet Nut Gun Kit Material: Carbon steel Model: BT-603 Maximum Effective Working Stroke: Approx. 6mm / 0.2in Maximum Force Arm Multiple: 25 Times Applicable Tips: M3 M4 M5 M6 How to Use: 1. Choose a suitable mandrel for use and screw it to the front end 2. The wrench is stuck on the front shaft cap 3. Remove the nut 4. Pr down the card position as if inward to complete Length: Approx. 210mm / 8.3in Package List: 1 x Rivet Nut Gun 4 x Mandrel(1 x M3, 1 x M4, 1 x M5, 1 x M6) 1 x Wrench 100 x Rivet Nuts(M3, M4, M5, M6, 25pcs of each) 4 x Shaft Cap(1 x M3, 1 x M4, 1 x M5, 1 x M6) 1 x User Manual Package List 1 x Rivet Nut Gun 4 x Mandrel(1 x M3, 1 x M4, 1 x M5, 1 x M6) 1 x Wrench 100 x Rivet Nuts(M3, M4, M5, M6, 25pcs of each) 4 x Shaft Cap(1 x M3, 1 x M4, 1 x M5, 1 x M6) 1 x User Manual