The three high-speed steel step drill bits from the Bosch SDH30 set, showing their different sizes and conical, stepped flute designs against a white background.
Bosch

Bosch SDH30 3-Piece High-Speed Steel Step Drill Bit Set for Metal, Plastic & Wood with 13 Hole Sizes & 3-Flat Shank

In stock
SKU: SDH30
$44.81
Description

Replace Your Entire Drill Index: Drill 13 Different Hole Sizes with Just 3 Bits.

Stop wasting time searching for the right size bit or slowly enlarging holes. The Bosch SDH30 3-Piece Step Drill Bit Set is the professional’s solution for drilling fast, clean, and perfectly round holes in thin materials. This versatile set is an essential for any tradesperson, perfect for electricians needing to punch clean knockouts for conduit, plumbers creating flawless faucet holes in stainless steel sinks, and HVAC techs running lines through sheet metal ductwork. Each bit is crafted from durable high-speed steel and engineered to replace an entire index of conventional bits, saving you time and space in your toolbox.

Features & Applications:

  • Self-Starting Point — Starts drilling immediately on contact without a pilot hole, preventing the bit from "walking" across the surface and ensuring perfectly placed holes on electrical panels, junction boxes, and auto body panels.

  • Balanced Double-Flute Design — Eliminates chatter and vibration for exceptionally fast, smooth cuts and perfectly round holes, ideal for creating burr-free openings that won't require time-consuming cleanup.

  • Versatile Multi-Material Drilling — Flawlessly drills accurate holes in a wide range of thin materials (up to 1/8"), including sheet metal, ducts, steel, copper, brass, aluminum, plastic, plexiglass, and wood.

  • Three-Flat Shank — Provides a secure, positive grip in your drill chuck, preventing slippage under high torque and ensuring maximum power is transferred from the drill to the cutting edge for ultimate efficiency.

  • Re-sharpenable Cutting Edge — The durable high-speed steel construction can be re-sharpened, providing a significantly longer tool life and a greater return on your investment compared to conventional bits.

What's in the Box (3 Pieces):

  • (1) 1/8" to 1/2" Step Drill Bit

  • (1) 3/16" to 1/2" Step Drill Bit

  • (1) 1/4" to 3/4" Step Drill Bit

Specifications:

  • Model Number: SDH30

  • Piece Count: 3

  • Total Hole Sizes: 13

  • Material: High-Speed Steel (HSS)

  • Shank Type: Three-Flat

  • Max Material Thickness: 1/8 Inch

  • Application: Metal, Plastic, Wood

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