1 PC,Irwin Tools 3046011 Speedbor Max Self Feed Wood Drill Bit, 2-1/8"

Ideal For Pipe & Conduit Systems. 3 Times The Cutting Area & Edges Of Standard Self Feed Bits. For Drilling Large Diameter Holes In Wood, Aggressive Screw Pitch. Precision Milled Shank Eliminates Run Out & Wobble. Forged In 1 Piece From High Carbon Steel For Max Strength Under Tough Drilling Conditions. Diameter: 2-1/8"; Overall Length: 5"; Shank Size: 7/16"; Speedbor Max Self Feed Wood Drill Bit; 3 Times The Cutting Area & Edges Of Standard Self Feed Bits; 7/16" Hex Quick Change Impact Shank Fits1/2" Or Larger Drills; Also Fits 7/16" Hex Impact Wrench Drills; For Drilling Large Diameter Holes In Wood, Aggressive Screw Pitch; Precision Milled Shank Eliminates Run Out & Wobble; Forged In 1 Piece From High Carbon Steel For Max Strength Under Tough Drilling Conditions; Ideal For Pipe & Conduit Systems; Carded.;