Twin Cutting Edges for Superior Cutting Speed and Ultra Clean Holes; Precision Ground Teeth with up to 50% Wider Cutting Surface, Provides Clean and Balanced Cuts for Maximum Control; Robust Replaceable Lead Screw with Burr-Free Threads that Feed the Bit through the Wood at a Consistent Rate; Precision Machined Shaft for Bit Concentricity to Eliminate Wobble and Deliver a Truer Hole; Quick Change Shank for Fast, Secure Change Out

Specifications:

Type: Self-Feed
Shank Size: 7/16 Inch
Boring Diameter: 1-1/2 Inch
Overall Length: 4-5/8 Inch