45 pound Class - Choose the CP-0032A for holes up to 2′′ diameter and 10 feet deep. A top performer in its class, the CP-0032A 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.