【Quick-Change Head】New Quick-change head design allows for easy changing of mandrels and nose pieces. Unique spring loaded mandrel automatically locks the mandrel lock pin for the fastest mandrel changes on the market. | 【Ergonomic And Save Effort】The 16 inch longer steel arms and ergonomic handles with double compound hinges maximizes leverage. Also, the mandrel can be easily removed by hand. | 【Completed Accessories】AOBEN 16" rivet nut tool kit includes 12-piece mandrel (Metric M3 M4 M5 M6 M8 M10 M12; SAE 1/4-20, 5/16-18, 3/8-16, 10-24, 10-32) & 145-piece rivet nuts, and a rugged carrying case for storage. Please note that the M6 mandrel was installed in the gun. | 【Hard-Wearing Quality】AOBEN rivet nut tool is made from thick steel and surface is heat-treated to prevent corrosion and increase the durability and strength of the tool. All pieces are packed in a rugged and compact carrying case. Each tool fits snugly into its respective place to prevent moving around and scraping. | 【Perfect After-Sales】We provide complete after-sales service. If you have any questions about using the product, you can contact us at any time.