Bondhus Balldriver Set The Bondhus Balldriver Set is the perfect precision tool for your next project. With a high quality, corrosion-resistant steel construction for optimal durability and a wide variety of sizes, this ball driver set makes fastening and loosening nuts, screws, bolts, and other hex fasteners easy and efficient. The set comes with all the tools you need for a successful project. Features include... 13 pc Set Standard sizes: .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"