1、Auto Locking: Unique spring loaded hex socket enables auto locking and manually installed central axes rotation. 2、With Rivets: Comes with 110pcs rivets in different sizes, including M3, M4, M5, M6, M8, M10 and M12, very useful. 3、Easy to Use: Ergonomic handle with double compound hinge maximizes leverage and largely simplifies the operation. 4、Convenience: Suits perfectly for working in hard to get places, which will also satisfy your various working needs. 5、Package Box: The package box will not only store all the accessories in an orderly, but also make the carrying easier. 110 x Rivet1 x Rivet Gun1 x Supporting Plate7 x Black Rivet Gun Head Accessory7 x Double End Stud Rivet Gun Accessory1 x Package Box1 x User Manual Item Type: Rivet GunMaterial: Stainless SteelSpecification: 20 x M3 Rivet20 x M4 Rivet20 x M5 Rivet20 x M6 Rivet10 x M8 Rivet10 x M10 Rivet10 x M12 RivetRivet Gun Total Length: Approx. 320mm / 12.6inRivet Gun Head Diameter: Approx. 24mm / 0.9in(There might be a certain error in manual measured parameters.)