Bondhus 11036 Set of 12 Balldriver Insert Bits, sizes 5/64-1/2-Inch Angle entry up to 25 degrees on sizes 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16, 3/8, and 1/2" Made on 1/4" hex stock to fit hand and power tools having 1/4" hex adapters Made in the USA ProGuard Finish is 5 times more effective than the next leading brand in preventing rust, protecting your investment over time Lifetime warranty - we will replace it free of charge