Application : For boring fast, clean holes through various wood materials in electrical, plumbing, and remodeling applications Bit Diameter : 2-1/4 IN. (57.2MM) Electric Drill Required : Recommended Includes : Hex wrench and spare set-screw. Overall Length : 5 IN. (127MM) Package : 1/Pk. Package Type : Re-usable storage tube Shank Diameter : 7/16 IN. Hex Shank Type : Quick Change Sub Brand : E-Z Bore&#174 Type : Self-Feed Wood Boring Bit Weight : 0.7 lbs. (0.32 kg)