Specifications:Material: MetalColor: Black + RedApplicable Head: M3-M12Maximum stroke: 9mmMaximum working effective stroke: 7mmPulling force: 100NSize: (L) X (W) 40x6cm \/ 15.75 \"x 2.36\" (appr.)Characteristics: Nut riveting set includes seven mandrels of different sizes including M3, M4, M5, M6, M8, M10, M12, 3 \/ 8-16, 5 \/ 16-18, 1 \/ 4-20, 10- 24. Ergonomic handles with double compound hinges to improve durability Unique spring loaded internal hexagonal sleeve automatically locks the rotation of the hand installed chuck. This rivet gun comes with 11 sets of interchangeable chucks and rivet nuts in various sizes, making sure to meet all your needs Ideal where there is limited access to the back of a panel, ideal for sheet metal fabrication.Note:Interchangeable Mandrel: M3 x 1, M4 x 1, M5 x 1, M6 x 1, M8 x 1, M10 x 1, M12 x 1.3 \/ 8-16x1, 5 \/ 16-18x1 1 \/ 4-20x1, 10- 24x1Rivets nuts: M3 x 10, M4 x 10, M5 x 10, M6 x 10, M8 x 10, M10 x 10, M12 x 10, 3 \/ 8-16x10, 5 \/ 16-18x10 1 \/ 4-20x10 10-24x10Package Included:1 x Riveter Tool Set (excluding other decoration instruction is not included. Please feel free to contact us if you have any questions. Hope a nice dayRatings and Reviews:Please allow slight measuring deviation due to manual measurement.Due to different production batch, the product details may be a little different.Due to different monitors and lights, the picture may not reflect the actual color of the item.Please consider the actual sizes shown in the listing as the pictures are usually enlarged to show detail.