Halls XS921 High-Speed Steel Step Drill 9-21mm | XS921

Halls XS921 HSS Step Drill Bit (9–21mm) with 1/4" Hex Shank

The Halls XS921 step drill bit is a high-speed steel (HSS) metal drill bit designed to open out holes in staged increments from 9mm up to 21mm. It’s ideal for installers and fabricators who want one bit to cover several common hole sizes without swapping cutters.

With a 1/4" hexagon shank, XS921 is suited to quick-change bit holders and can also be held in suitable drill chucks for controlled, progressive drilling.

Key Features

• Step drilling profile: Creates multiple hole sizes with a single bit for efficient, progressive drilling.
• 9–21mm size coverage: Covers 9mm, 11mm, 13mm, 15mm, 17mm, 19mm and 21mm steps for common metalworking tasks.
• High-speed steel (HSS): Built for drilling in metal with durable cutting performance in demanding site and workshop use.
• 1/4" hexagon shank: Helps deliver a secure grip in quick-change holders and reduces the chance of slippage compared with round shanks.
• Compact single-bit solution: Helps minimise tool changes when enlarging holes to a final diameter.

Specifications at a glance

Suitable applications

• Progressively enlarging pre-drilled holes up to 21mm in metal.
• Electrical, plumbing and HVAC installation tasks where multiple hole sizes are required.
• Sheet and fabrication work where controlled step-by-step drilling helps achieve the required diameter.