Klein Tools QRST11 Step Drill Bit, Quick Release Spiral Double-Fluted, 7/8 to 1-1/8-Inch, Hex Shank, Cut Steel, Wood, Plastic, Aluminum Quick Release 7/8 to 1-1/8-Inch
A quick-release, double-fluted step drill bit from Klein Tools designed for fast, controlled hole cutting in steel (up to 16 gauge), wood, plastic, and aluminum—covering 7/8 in to 1-1/8 in sizes with clear laser markings.