Carbide Drill Bits – Choose Your Size, .120″–.1949″, 1/8″ Shank CD4

Key Specifications

• Material: Solid Carbide
• Shank Diameter: 1/8" (3.175 mm)
• Overall Length: 1.50"
• Cutting Diameter: Selected size
• Depth Stop Rings: Included unless specified

Suitable for precision micro-drilling in PCBs, plastics, composites, and thin metals.

Condition & Length Notes:

• New: Factory-new drills
• R/S: Factory resharpened drills
• FL: Standard flute length (maximum plunge depth)
• STUB: Short flute length for increased rigidity and reduced breakage

Looking for individual sizes outside this range?
Carbide Drill Bits — Choose Your Size

Looking for a range of drill sizes instead?
View our incremental size drill sets

Full Size Range:
This listing includes solid carbide drill bits with diameters ranging from approximately 3.10 mm to 4.95 mm (0.122″ to 0.195″), all with a standard 1/8″ shank. Sizes include #31 (0.120″), #30 (0.1285″), #29 (0.136″), #28 (0.1405″), #27 (0.144″), #26 (0.147″), #25 (0.1495″), #24 (0.152″), #23 (0.154″), #22 (0.157″), #21 (0.159″), #20 (0.161″), #19 (0.166″), #18 (0.1695″), #17 (0.173″), #16 (0.177″), #15 (0.180″), #14 (0.182″), #13 (0.185″), #12 (0.189″), #11 (0.191″), and #10 (0.1935″), as well as common fractional sizes including 1/8″ (0.125″), 5/32″ (0.1563″), 11/64″ (0.1719″), and 3/16″ (0.1875″).