Astro Pneumatic TS21 ONYX TurboStep HSS Mechanics-Length Drill Bit Set, 21 Pieces, 1/16 inch - 3/8 inch

Astro Pneumatic TS21 ONYX TurboStep HSS Mechanics-Length Drill Bit Set, 21 Pieces, 1/16 inch - 3/8 inch

• The Astro Pneumatic TS21 ONYX 21 pc TurboStep HSS Mechanics-Length Drill Bit Set (1/16" - 3/8") offers stepped-tip, spiral-fluted bits that eliminate bit walk and reduce the need for pilot holes, optimized for hard alloys, sheet metal, and irregular material surfaces.
• Features:
  • Spiral fluted, stepped tips provide self-centring and reduce wandering on start holes.
  • Precision ground from heat treated M2 High Speed Steel with Onyx oxide coating to resist chip build-up.
  • Three-flat shanks for improved grip in chucks without slipping.
  • Mechanics-length bits give better access in tight or recessed areas.
  • Covers sizes from 1/16" up to 3/8" in 21 incremental steps for versatility.
• Includes:
  • Drill bits: 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8"
• Specifications:
  • Manufacturer: Astro Pneumatic
  • Part Number / SKU: TS21
  • Drill Size Range: 1/16" to 3/8"
  • Material: M2 High Speed Steel
  • Coating: Onyx oxide finish
  • Shank Style: Three-flat
  • Bit Length: Mechanics-length (standard shop length)
  • System Compatibility: suitable for drilling through metals, alloys, sheet steel, automotive components, and general fabrication work
• The Astro Pneumatic TS21 ONYX may also be called ONYX TS21 step drill set, TurboStep HSS drill bits, mechanics length stepped drill set, TS21 bit kit, and Onyx 21pc HSS set.

Astro Pneumatic manufactures professional air tools and shop equipment, including the ONYX series of compact impact wrenches engineered for high torque and accessibility in cramped applications.

Q: Why is a stepped tip design beneficial?
A: The stepped geometry helps the bit center itself and progressively engage the material, minimizing wandering and eliminating the need for pilot holes.

Q: What materials are these bits suited for?
A: They excel on hard alloys, sheet metal, and imperfect or uneven parts.

Q: What sizes are included in the set?
A: It includes 21 sizes from 1/16" to 3/8", covering most common drilling needs.