Bondhus 11099 Set of 9 Balldriver Insert Bits, sizes 2-12mm Angle entry up to 25 degrees on sizes 2, 2.5, 3, 4, 5, 6, 8, 10, and 12mm 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