3 Pieces Step Drill Bit Set Type 78-AG Category_Oil Drain Plug and Gasket Assortments commercial-grade wall thickness holds up

commercial-grade wall thickness holds up where thin-wall imports fail

Fiber gaskets — compressible and conforming

Best For / Applications Electrical enclosures and panels — clean

Class 8 hex nuts — matching every diameter

660 pieces total

3 Pieces Step Drill Bit Set Type 78-AG Category_Oil Drain Plug and Gasket Assortments commercial-grade wall thickness holds upPunching a clean knockout in a steel electrical enclosure or cutting a conduit entry hole without deforming the panel is exactly what step bits are designed for. This 3 piece Gold Oxide set covers 1 8" through 1 1 8" across three bits, letting you step through multiple hole sizes in thin material with one tool and no pilot drill. What's Included Step bit #1 1 8" to 1 2" (covers small conduit and wire entry sizes) Step bit #2 3 16" to 7 8" (covers mid