CLEVELAND, #2 Drill Bit Size, 2 5/8 in Flute Lg, Jobber Length Drill Bit - 406K02|C72102 - Grainger
5" x 1/2" Nitro Heavy Duty - 3 Flat Shank Drill Bit - Hi-Line Inc.
Amazon.com: Lichamp Step Drill Bit Set for Metal Sheet Heavy Duty, 5-Piece HSS Step Up Down Drill Bits Stepper Unibit for Steel Hole, 50 Sizes from 1/8 to 1-3/8 inches, B105RD :
Tapcon 5/32 in. x 4-1/2 in. Steel Carbide Tip Masonry Drill Bit Set (4-Pack) 11249 - The Home Depot
Precision Twist Drill 015828 | 7/16" Diameter 5-1/2" OAL 135 Degree High Speed Steel Bright Finish Jobber Length Drill Bit - All Industrial Tool Supply