UTVDISTRIBUTIONS DZUS Button / Quarter Turn Button dimple die set is a must have for all fabricators. We designed this dimple die to withstand production shop environments. Not a cast or mild steel part-premium heavy duty 4130 machined material. Product Features: -4130 steel construction. -Black Oxide Coating -Grade 8 Hex Head Flange Bolt -Hex Head Flange Nut No need for annoying washers when you are knocking out tons of holes a day. This dimple makes the following indentation : .750 wide x .200 deep. The piece of aluminum in the pictures is not included-for reference purposes on .