The high-quality material is made of high-quality alloy steel, which has high hardness, wear resistance and durability, saving time and effort. High Performance Forged head alloy steel pistol is durable and pulls rivets quickly. This product has a vertical handle, which is simple and labor-saving to use. Easy to install. The adapter's hex bolt attaches to an electric drill, quickly transforming into a pistol with electric rivets. Easy to install. Product Dimensions Rivet Pistol Adapter: Approx. 173 X 35mm/6.8 X 1.4 inches; Key: approx. 149 X 35mm/5.9 X 1.4 inches; Handle: approx. 123 X 26 mm/4.8 X 1 inch. Package Contents: 1 rivet gun adapter, 1 key, 1 handle, 4 rivet heads, 3 clamps. Specifications: Element Type: Rivet Gun Adapter Material: Allied Steel Dimensions: Rivet Gun Adapter: Approx. 173 X 35mm/6.8 X 1.4 inches Key: Approx. 149 X 35mm/5.9 X 1.4 inches Handle: Approx. 123 3 Well, thank you for your understanding.