D'Versibit® Type A Auger Bit. 9/16" (14.3 mm) bit diameter, 54" (1371.6 mm) long with a 3/16" (4.8 mm) shaft diameter. Wood-type auger bit with screw point. Pulls itself through wood, avoids walking or skidding. Excellent for drilling in soft woods or through thin sections. Slow back-taper allows for easy retrieval.