These are the best quality dimple dies available, made in the USA. Individual 5/16" Flush Recess Dies are CNC machined from Pre-Hard 4140 alloy steel for long-lasting durability. Designed to be used with 82-degree countersunk fasteners. Can also be used as a decorative dimple (resembles punch flare) for race cars. Use our HF-D100 hydraulic installation tool to install these (5/16-18 mandrel also required when using HF-D100)
