BOSCH, 1 3/8 in Drill Bit Size, 4 in Overall Lg, Forstner Drill Bit - 44H488|FB022 - Grainger
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
1-3/4" Forstner Drill Bit - Yonico 43027S | PrecisionBits.com
Hilti TE-YX 1-3/8 in. - 23 in. Carbide SDS Max Imperial Hammer Drill Bit 2165918 - The Home Depot
11 Step Drill (Drill (3/16" to 1-3/8") - EldoradoTools
1/8”-1-3/8” Step Drill Bits with Center Punch
Irwin Tools Unibit #5 1/4-Inch to 1-3/8-Inch Step-Drill Bit, 1/2- by IRWIN 10235 ..#from-by#_partzforce_62231816880624 - Amazon.com
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
Milwaukee 1/4 in. - 1-3/8 in. #5 Black Oxide Step Drill Bit (10-Steps) 48-89-9205 - The Home Depot
Drill Bit Set 8 PCS Metal Drill Bits for Wood Impact Driver Steel Dril – SATC
Drill America #5 HSS Quick Change Hex Shank Step Drill Bit, (1/4" - 1-3/8" by 1/8") STE5HEX | Zoro
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
DRILL BIT SET - 12 PCS - Small Bits - 2 Each 1/8, 1/16, 3/64, 5/64, 3/32, 7/64 | eBay
1/2" x 6" 3/8" Shank Carbide Tipped Masonry Drill Bit, Drill America | DAM6X1/2X3/8 | DrillsandCutters.com
Brunner & Lay Carbide Rock Bit, H Thread, Economy, 1-3/8" Diameter - T – A & M Sales, Inc
35mm or 1-3/8″ Diamond Drill Bit | Glass House Store