The SK58 is designed for blast hole drilling leak detection for gas utilities and dowel hole drilling up to 3 inches / 7.6 cm in diameter and 20 feet / 6 m deep. The sinker drill uses air or water flushing (model dependent) to clear holes of debris. The sinker drill features a feathering trigger for easy starts a direct drive rotation motor adjustable from 0 to 300 rpm and is furnished with hose whips and flush faced quick disconnect couplers.