Dimple die set for Harbor Freight with carbon steel flared holes1、Versatile Utility: This 3D printed dimple die set could add strength and highlight to your projects, and can be used in conjunction with for Harbor Freight hydraulic punch kits. 2、Enhance Your Project: Punch holes in sheet metal using a punch tool, then switch to the 3D printed die for a raised effect. Includes steel backing plates for support during forming. 3、Versatile Usage: These dies can be used in various applications as long as the hole diameter is correct. Enhance the strength and appearance of your projects with this dimple die kit. 4、Safety Tips: It's recommended to remove burrs from holes before molding. Always wear safety glasses and appropriate personal protective equipment when using. 5、Premium Material: The sheet metal dimple die tool set is made of high strength carbon steel and nylon material, which is not easy to deform, long lasting and wear resistant.