Unique ball-end design allows hex screws to be tightened or loosened at angles up to 25 deg (degree). Made of high-quality tool steel. Packaged in reusable plastic holder. Sizes include: .050", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8".