The Wera high quality nutsetter out of stainless steel for hexagon head screws. Stainless to prevent the risk of extraneous rust. Non-magnetic design with retaining spring. 1/4" hexagon, suitable for holders as per, DIN ISO 1173-F 6.3.

Solution to the extraneous rust problem fasten stainless screws with stainless tools
Nutsetter for hexagon head screws
Non-magnetic, with retaining spring, stainless steel against extraneous rust
1/4" hexagon drive (Wera connecting series 4)

Hexagon headed bolts, screws and nuts Drive 1/4" hexagon, suitable for DIN ISO 1173-F 6.3 bit holders Design Non-magnetic, retaining spring, stainless steel for minimising rust