Step Drill Bit Set, Automatic Center Punch Unibit [Titanium Coated, Double Cutting Blades/Cobalt High Speed Steel/Short Length Drill] 5 Pcs Multiple Hole Bits Set Total 50 Sizes with Aluminum Case Stonego Tool
Vise-Grip 1 1/8 UNI-BIT VGPUN9 - Advance Auto Parts
IRWIN Unibit 3/8-in 2-Step Drill Bit (7/8-in and 1-1/8-in) in the Step Drill Bits department at Lowes.com
Irwin Unibit Step Drill, 3/16" to 1/2" – ToneShapers