Bosch 21-Piece Assorted Black Oxide Coated HSS Jobber-Length Twist Drill Bit Set

Regular price $24.98

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Bosch 21-Pc Black Oxide HSS Twist Drill Bit Set

A versatile 21-piece Bosch drill bit set for clean, accurate starts and general-purpose drilling in wood, plastic, PVC, and light-gauge metal. Black oxide coating reduces friction and enhances bit life, while jobber-length bits offer reliable performance for everyday tasks.


Key Features:

  • No-Skate Tip: Split-point design helps prevent walking for precise starts
  • Low-Friction Coating: Black oxide finish reduces heat and wear for longer life
  • Secure Grip: Three-flat shank on 3/16 in and larger bits minimizes slipping in the chuck
  • Multi-Material Use: Ideal for wood, plastic, PVC, and light-gauge metal
  • Comprehensive Assortment: 21 sizes from 1/16 in to 1/2 in for common drilling needs

Specifications Table:

Specification Details
Type Jobber length
Material Black oxide coated HSS
Package Quantity 21
Shank Type Three-flat on 3/16 in and larger; round on smaller bits
Bit Diameter (Inches) Assorted
Bit Diameter (Letter) Assorted
Bit Diameter (mm) Assorted
Bit Diameter (Number) Assorted
Bit Length Set
Maximum Drilling Depth 3 in
Shank Size Assorted
Heavy Duty No
Right/Left Hand Right handed
Set/Individual Set
Tip Geometry 135-degree split-point
Brand/Model Compatibility Fits most drill drivers
Compatible Tool Drills
For Use on Metal Yes (light-gauge)
For Use on Wood Yes
For Use on Fiberglass Yes
For Use on PVC Yes
For Use on Stainless Steel No
Warranty None
CA Residents: Prop 65 Warning(s) No
UNSPSC 20121600
Included Sizes (2) 1/16, (2) 5/64, (1) 3/32, (1) 7/64, (2) 1/8, (1) 9/64, (1) 5/32, (1) 11/64, (2) 3/16, (1) 13/64, (1) 7/32, (1) 15/64, (2) 1/4, (1) 5/16, (1) 3/8, (1) 1/2 inch

Frequently Asked Questions (FAQ):

Q: What materials can these bits drill?
A: They are designed for general-purpose drilling in wood, plastic, PVC, and light-gauge metal; not recommended for stainless steel.


Q: Do the bits have split-point tips?
A: Yes, they feature a 135-degree split-point for clean, accurate starts.


Q: Will the shanks slip in my drill?
A: Bits 3/16 in and larger have a three-flat shank to improve grip and reduce slipping.


Q: Are these compatible with most drills?
A: Yes, they fit most standard drill drivers.


Q: What sizes are included?
A: Includes two each of 1/16, 5/64, 1/8, 3/16, 1/4 and one each of 3/32, 7/64, 9/64, 5/32, 11/64, 13/64, 7/32, 15/64, 5/16, 3/8, 1/2 inch.


Streamlined Utility with a Sleek, Pro-Grade Finish

This Bosch set brings a refined, industrial edge to your workshop—sleek black oxide bits that feel purposeful and precise. The split-point tip is the hero, delivering crisp, confident starts that elevate everyday projects. Style it in a clear case on open shelving; the gradient of sizes reads like a sculptural vignette. A smart, durable essential for creating polished, luxurious details in any space.


Equip your drill with Bosch precision—grab this 21-piece set for reliable, clean holes in every project.

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