Set Copper rivets and burrs: 2 x Rivet Setter included. Made of premium stainless steel material, Dimensions: 120x19x12mm (4.7x0.76x0.46in); Hole diameters: 4.2mm & 3.5mm.Weight: 211g. Heat-treated: This tool is for heavy duty copper rivets, and not the hollow, light weight rivets that are used for lighter fastening applications. Wide Application: Only several steps are needed to finish your work and DIY projects. This tool can be used for making leather items such as wallets, purses, cardholders, and more. A very useful addition to your craft tools. How to use? Use the hole in the rivet setter to tightly together the rivet,leather material and burr. Φ3.5mm + Φ4mm holes are used to install size 12 rivets,Φ4.2mm+Φ5mm holes are used to install size 9 rivets. NOTE: 2 tools ONLY (Photos showing other objects are for illustrative purposes only.) Colour:Silver Material:Metal Size:Total length about 12cm Package Contents: 1set * rivet setter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.