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″.