Bosch SDC2 3/16–7/8-Inch HSS Turbo Step Drill Bit

Bosch SDC2 is a high-speed steel turbo step drill bit with a listed drilling range of 3/16 to 7/8 inch. Its two cutting edges and double-flute design are intended for cordless drilling, conduit work and electrical knockouts, with use across several listed materials up to 1/8 inch thick.

At a glance

Two cutting edges and a balanced double flute are designed to support cutting and manage chatter and vibration.
The listing describes use in high- and low-speed cordless drill modes.
Intended for common step-drill tasks such as conduit openings, electrical knockouts and faucet installations.
Manufacturer claims include cleaner holes and up to 2X more holes per battery charge. These are stated performance claims, not independently verified results.

Price

$39.46Save 20%

Reference price: ~~$49.49~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

The title-stated 3/16 to 7/8 inch range suits a variety of common hole sizes with one bit.
The listed applications span metal, plastics and other materials, including electrical and plumbing tasks.
The two-flute design and cordless-drill focus make it relevant for mobile trade work.

Cons

This is a single bit, so the listed size range does not provide a multi-bit set for other diameter ranges.

Technical specifications

14 specifications

Identity
Brand	Bosch
Model	SDC2

Dimensions and installation
Listed weight	2.56 ounces

Materials and construction
Material listed	High Speed Steel (HSS)
Finish type	High-speed Steel
Shank type	Straight
Number of flutes	2
Cutting angle	120 degrees

Cutting details
Title-stated size range	3/16 In. to 7/8 In.
Cutting diameter	2 inches
Minimum bore diameter	0.19 inches

Listed applications
Surface recommendation	Metal,Steel
Materials listed for use	sheet metal, ducts, steel, copper, brass, aluminum, plastic, vinyl siding, plasterboard, PVC, stainless steel and cast iron
Maximum material thickness stated	up to 1/8 In.

What to know before buying

Listing details to confirm

Listing details are inconsistent: the title gives a 3/16 to 7/8 inch range, while the cutting-diameter field says 2 inches and the minimum bore is 0.19 inches. Confirm the intended step sizes before purchase. The listing also calls the flute straight while describing it as Curved-Tec elsewhere. Material use is stated for thicknesses up to 1/8 inch, and performance statements such as up to 2X more holes per charge are manufacturer claims.

What’s in the box

Included

1 × 3/16 In. to 7/8 In. High-Speed Steel Turbo Step Drill Bit

Who is it for?

A good fit for

Electricians and contractors needing step-drilled openings for conduit or knockouts in listed materials.
Buyers using a cordless drill who need a single bit spanning common hole sizes from 3/16 to 7/8 inch.
Work involving sheet metal, steel, copper, brass, aluminum, plastics or other listed materials within the stated thickness limit.

Less suited to

Buyers needing a kit with multiple bits or a range extending beyond the title-stated 7/8 inch maximum.
Applications requiring material thicker than the stated limit of 1/8 inch.

Bosch SDC2 3/16–7/8-Inch HSS Turbo Step Drill Bit · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 36 ratings

5 stars75%75%
4 stars13%13%
3 stars6%6%
2 stars0%0%
1 star6%6%

Aggregate customer ratings lean positive, with most ratings in the top category, but a smaller share are low ratings. Without written feedback, the reasons behind either response are unknown. For buyers relying on the advertised hole range or cordless performance, the listing's conflicting diameter details make confirming the size steps especially important.

Frequently asked questions

What hole-size range does the Bosch SDC2 cover?

The title states 3/16 to 7/8 inch. Other diameter fields in the listing conflict, so verify the intended sizes before buying.

What materials does the listing say it can drill?

It lists sheet metal, ducts, steel, copper, brass, aluminum, plastic, vinyl siding, plasterboard, PVC, stainless steel and cast iron, with materials up to 1/8 inch thick.

Is the SDC2 intended for cordless drills?

Yes. The listing describes use with cordless drills in both high- and low-speed modes.

What is included?

The package list specifies one 3/16-inch to 7/8-inch high-speed steel turbo step drill bit.