Wera 05071222001 3869/4 Stainless Steel 1/4'' Hex Nutsetter is for hexagon head screws and is Stainless to prevent the risk of extraneous rust. Non-magnetic design with retaining spring. Wera 3869/4 1/4'' Hex Stainless Steel Nutsetter, suitable for holders as per, DIN ISO 1173-F 6.3.