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The IRWIN IR60511 is a high speed steel jobber-length drill bit designed for general-purpose drilling in metal, wood, and plastic. The bit features a 118-degree standard point angle that allows for easy starting without a center punch on most materials. With an 11/64-inch diameter, 3.25-inch overall length, and 2.125-inch flute length, this bit fits the standard jobber proportions familiar to machinists and tradespeople alike. The straight shank seats securely in keyed or keyless drill chucks, and the HSS construction provides the hardness and heat resistance needed for repeated production use. Licensed electricians, plumbers, and HVAC technicians reach for jobber bits like this when field-drilling panel knockouts, pipe clearance holes, and bracket mounting points.
This bit is suited for residential and light commercial trade work wherever a compact, general-purpose drill bit is needed. Its jobber length makes it a practical fit for standard drill drivers, right-angle drills, and drill presses. The 11/64-inch diameter is commonly called out for pilot holes, sheet metal work, and small-diameter through-holes in strut, angle iron, and conduit fittings. It is sold individually, making it a straightforward single-piece replacement for a worn or broken bit in a trade kit.
Designed as a general-purpose jobber-length drill bit compatible with any standard keyed or keyless drill chuck that accepts a straight shank in the 11/64-inch size range.
Secure the shank fully in the chuck before drilling and verify chuck tightness to prevent bit slippage. Use cutting fluid or lubricant when drilling steel to extend bit life and reduce heat buildup. Wear appropriate eye protection per applicable job-site safety requirements. Inspect the cutting edges before each use and replace the bit if the point shows signs of heat discoloration or chipping.
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