Drive Type : Square Drive Size : #1 Shank Type : Hex Shank Size : 1/4 In Material : Steel Finish : Manganese Phosphate Length : 1 In Suitable For : Power Tools
Drive Type : Square Recess Drive Size : #3 Shank Type : Hex Shank Size : 1/4 In Material : High-Grade Steel Finish : Black Oxide Length : 2-3/8 In Suitable For : IRWIN Magnetic Screw-Hold Attachment