Angle entry up to 25 degrees on sizes .050, 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16, and 3/8" 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