Angle entry up to 25 degrees on sizes 1.5, 2, 2.5, 3, 4, 5, 6, 8, and 10mm The non-magnetic ProHold tip holds screws snug on tool and does not interfere with tool rotation Made of Protanium steel and are up to 20% stronger than competitor product ProGuard Finish ensures effective prevention of rust Lifetime warranty Made in USA