This step drill is designed to drill holes and recesses to snugly fit the specialized screws and handle fasteners used in the knife and gun-making industry. It will also work for many other applications where you are recessing appropriately sized screws. These are made from high-quality HSS bits. Each one is turned to our rigid specifications and is very precise. They feature a brad-point tip to center the entry point on your material (essential to accurate hole placement). We do not recommend using this model on steel or metal as it is designed for handle materials and composites, such as wood, bone, carbon fiber, phenolic resin based materials, and much more. These also work well for many other specialty precision uses, such as modeling, woodworking, and crafts.
This model is designed for setting Corby Bolt fasteners, or any fastener featuring a 0.213 inch pilot diameter and a 0.312 inch head diameter, or less.
Specifications
Designed for: Corby Bolt Fasteners
Bit Dimensions = (0.312 step x 0.213 pilot) Inch
Material = HSS - High-Speed Steel
