The CP0032A Sinker Drill is for holes up to 2” diameter and 10 feet deep. A top performer in its class, the CP0032A is highly effective in general excavation work, quarry drilling, bench mining and other jobs requiring a sinker drill in the 45-pound class. The tool’s durable “beavertail” retainer helps it deliver increased contact and reduces collar wear. Includes muffler to meet 114 dB Sound Power Level Guaranteed (2000/14/EC) dB(A). 7/8” x 4-1/4” bit shank.