1-3/8" Standard Drill Bit: 1/2" SS, Carbide Tip-SS138
11 Step Drill (Drill (3/16" to 1-3/8") - EldoradoTools
1-3/4" Forstner Drill Bit - Yonico 43027S | PrecisionBits.com
Drilax Diamond Drill Bit Hole Saw 1-3/8 inch Core Glass, Marble, Grani – Drilax Tools
Milwaukee 48-89-9205 #5 Step Drill Bit, 1/4 in. - 1-3/8 in. by
DIABLO 1-3/8 in. x 31 in. x 36 in. Carbide-Tipped Rebar Demon SDS-Max 4-Cutter Hammer Bit DMAMX1350 - The Home Depot
1-3/8" Step Bit (#12) Metal Cutter | Greenlee
Drill America #5 HSS Quick Change Hex Shank Step Drill Bit, (1/4" - 1-3/8" by 1/8") STE5HEX | Zoro
Milwaukee 1-3/8 in. High-Speed Steel Self-Feed Bit 48-25-1372 - The Home Depot
Drill Bit Set 8 PCS Metal Drill Bits for Wood Impact Driver Steel Dril – SATC
1/4 in. - 1-3/8 in. Carbide Tipped Forstner Drill Bit Set with 3/8 In. Shanks, 8 Piece
SB1/4-1-3/8, STEPBIT, DBL STRT FLUTE | Southwire
1/2" x 6" 3/8" Shank Carbide Tipped Masonry Drill Bit, Drill America | DAM6X1/2X3/8 | DrillsandCutters.com
DEWALT 3/8-in 5-1/16-in Black and Gold Coated HSS Jobber Length Twist Drill Bit in the Twist Drill Bits department at Lowes.com
BOSCH, 1 3/8 in Drill Bit Size, 4 in Overall Lg, Forstner Drill Bit - 44H488|FB022 - Grainger
Milwaukee 1-3/8 in. x 23 in. 4-Cutter SDS-MAX Carbide Drill Bit 48-20-8480 - The Home Depot
Tacklife Step Drill Bit Set With & Automatic Center Punch, Total 50 Sizes , PDH06A - Walmart.com
Amazon.com: SILATU Step Drill Bit - 1/4” to 1-3/8” Step Drill Bits for Metal, High Speed Steel Black Coated Stepping Bit, Unibit Ten-Flute Step Drill Bit Sizes for Wood, Metal, Plastic, Multiple