Irwin Tools Unibit #20 9/16-Inch to 1-Inch Step-Drill Bit, 1/2-Inch Shank (10220)

Drill Doctor DDSB Spade and Twist Drill Bit Sharpener

Irwin Tools Unibit #3 1/4-Inch to 3/4-Inch Step-Drill Bit, 3/8-Inch Shank (10233)

This Old House

Irwin Industrial Tools 3046011 2-1/8-Inch 3-Cutter Self Feed Drill Bit

Irwin 16102 Unibit2MT Titanium Nitrate Coated 4-Millimeter to 12-Millimeter by 1/4-Inch Shank Step Drill Bit

Irwin Tools Unibit #1 1/8-Inch to 1/2-Inch Step-Drill Bit, 1/4-Inch Shank (10231)

Drillpro Titanium Step Drill Bit Cone Drill Bits, High Speed Steel 10 Steps 1/4” to 1-3/8”

Lenox 30882-VB2 Vari-Bit 1/2-Inch to 1-Inch Step Drill Bit with 3/8-Inch Shank

Irwin Tools Unibit #21 13/16-Inch to 1-3/8-Inch Step-Drill Bit, 1/2-Inch Shank (10221)

IRWIN Unibit High-Speed Steel Fractional Self-Starting Step-Drill #5, 10235

Ram-Pro 36 Flexible Horsehair Bristle Tin/Metal Tubular Ferrule Handle Acid/Flux Brushes for Home/School/Shop/Garage

Uvex Bionic Face Shield with Clear Polycarbonate Visor and Anti-Fog/Hard Coat (S8510)