Klein Tools QRST15 Step Drill Bit, Quick Release Spiral Double-Fluted, 7/8 to 1-3/8-Inch, Hex Shank, Cut Steel, Wood, Plastic, Aluminum — Bits & Drilling product photo
Klein Tools QRST15 Step Drill Bit, Quick Release Spiral Double-Fluted, 7/8 to 1-3/8-Inch, Hex Shank, Cut Steel, Wood, Plastic, Aluminum — additional product viewKlein Tools QRST15 Step Drill Bit, Quick Release Spiral Double-Fluted, 7/8 to 1-3/8-Inch, Hex Shank, Cut Steel, Wood, Plastic, Aluminum — additional product viewKlein Tools QRST15 Step Drill Bit, Quick Release Spiral Double-Fluted, 7/8 to 1-3/8-Inch, Hex Shank, Cut Steel, Wood, Plastic, Aluminum — additional product viewKlein Tools QRST15 Step Drill Bit, Quick Release Spiral Double-Fluted, 7/8 to 1-3/8-Inch, Hex Shank, Cut Steel, Wood, Plastic, Aluminum — additional product viewKlein Tools QRST15 Step Drill Bit, Quick Release Spiral Double-Fluted, 7/8 to 1-3/8-Inch, Hex Shank, Cut Steel, Wood, Plastic, Aluminum — additional product viewKlein Tools QRST15 Step Drill Bit, Quick Release Spiral Double-Fluted, 7/8 to 1-3/8-Inch, Hex Shank, Cut Steel, Wood, Plastic, Aluminum — additional product view
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Klein Tools QRST15 Step Drill Bit, Quick Release Spiral Double-Fluted, 7/8 to 1-3/8-Inch, Hex Shank, Cut Steel, Wood, Plastic, Aluminum

Brand: Klein Tools

Availability set by the retailer

The Klein Tools QRST15 Step Drill Bit is a quick-release, spiral double-fluted step bit that drills clean, accurate holes from 7/8-Inch to 1-3/8-Inch in a single pass. The bit is coated with aluminum titanium nitride, delivering durability up to 10 times greater than steamed black oxide for an extended bit lifespan. Dual spiral flutes rapidly pull the bit through the material and remove chips for faster cuts and drilling, while the fast-starting, non-walking drill tip prevents walking for precise and stable drilling results. Impact rated for use with both impact drivers and standard drills, the 1/4-Inch quick-release hex shank provides a firm, positive grip that will not spin out in the chuck. Easy-to-read laser markings allow for quick size identification of three hole sizes, enhancing efficiency and accuracy on the job. Suitable for steel (up to 16 gauge), wood, plastic, and aluminum, this versatile step bit is ideal for electricians, HVAC technicians, mechanics, and DIYers who need multiple hole sizes from a single tool. Brand: Klein Tools; Material: High Speed Steel (HSS); Cutting Diameter: 1.38 inches; Finish Type: Brushed; Shank Type: Hex; Cutting Angle: 118 degrees; Style: Quick Release; Size: 7/8 to 1-3/8-Inch; Rating: 4.6 out of 5 stars (198 ratings); ASIN: B0CKY3CFZQ

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Choosing Bits & Drilling

How do I choose driver bits?

Match the bit tip to the fastener recess exactly — Phillips, Torx, square, or hex — because a loose fit strips the fastener. For impact drivers, use impact-rated bits (typically S2 steel) that withstand concussive loads; standard bits can snap. A magnetic bit holder keeps fasteners in place for one-handed driving.

When do I need a step drill bit?

Step bits drill a range of hole sizes in thin material like sheet metal, electrical boxes, and plastic, deburring as they cut. They are not a substitute for twist bits in thick steel, where a dedicated drill bit is more efficient. Choose a step range that covers the hole sizes you actually need.