Uses: For fixing holes, oblique holes, and overlapping holes in wood
Size: 0.6, 0.8, 1.0, 1.2, 1.4 inches (15, 20, 25, 30,
Shaft diameter: 0.25 inch (6.35 mm) hex shaft
Compatible models: electric drills, charging drill drivers, charging impact drivers
Suitable rotational speed: 2,000 rpm or less (0.6 - 0.8 inches (15 - 20 mm)), 1,500 rpm or less (0.9 - 1.4 inches (25 - 35 mm))