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Walter 01W105 step drill bit with twelve stepped cutting diameters

Walter Surface Technologies

Walter Surface Technologies 01W105 Step Drill 12-Step 3/16"-7/8"x3/8

SKU CH-D9PT-C09WK

Drills 12 progressive hole sizes from 3/16 to 7/8 inch with a 3/8 inch shank

  • 12-step design covers multiple hole sizes in one tool
  • 3/16 to 7/8 inch range handles common drilling tasks
  • 3/8 inch shank fits standard drill chucks securely
  • Straight flute geometry provides clean cuts in thin materials
  • New condition ensures full factory performance from first use

12-Step Range

The Walter 01W105 step drill creates 12 distinct hole sizes from 3/16 inch to 7/8 inch in a single pass. It is designed for electricians, plumbers and metalworkers who need to enlarge pilot holes quickly without changing bits. The straight-shank design fits standard 3/8 inch drill chucks. This tool suits professionals who value speed on repetitive drilling tasks.

Build Integration

The 3/8 inch shank locks into any keyless or keyed chuck rated for that capacity, so no special adapter is required. A single bit replaces a tray of individual twist drills, freeing pouch space and reducing change-over time on the job site. It works with corded or cordless drills that deliver sufficient torque for steel. Buyers who need a hex-shank impact-rated version will need a different tool.

Capacity Headroom

The 12-step progression covers common conduit, pipe and fastener clearance sizes up to 7/8 inch diameter. Each step self-centres, reducing walk on thin sheet metal and keeping holes round. Material thicker than the step height may require multiple passes or a larger drill press setup. Users drilling holes larger than 7/8 inch must select a different bit.

How it compares

Measured against everything we stock in Power Drills, Drivers & Cutting Bits, at today’s prices. Recalculated every night.

Price $50.99
Cheaper than about 61% of the 2,412 comparable items (median $81.99).

Specifications

Product
Brand nameWALTER

Questions about this item

How many hole sizes does the 12-step drill cover from 3/16 in to 7/8 in?

The 12-step drill produces 12 distinct hole diameters ranging from 3/16 in to 7/8 in with a 3/8 in shank.

Does the step drill generate noticeable heat during extended drilling in metal?

The high-speed steel construction dissipates heat efficiently, keeping the bit cool during prolonged use in sheet metal and plate.

What shank size must my drill chuck accept for this 3/8 in step drill?

A 3/8 in chuck or larger is required to hold the 3/8 in shank securely.

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