Titanium
Used for the most rigorous drilling applications, this coating will increase drill life 3 to 4 times. Great for plastics and other hard to cut materials.
Teflon
Recommending for most applications. The Teflon coating acts as a friction reducer to increase wear resistance. Helps prevent slug build up and breaking drills.
Duralon
Combined with the Teflon coating, coating will not wear off even after months of use. Great for plastic coated stock, drilling varnish, enamel and aqueous coated paper.