Park Tool Spoke Key SW-15 - Y-Sleutel

3.2mm square drive, with a nominal outside shaft diameter of 6mm
5mm hex socket with a nominal outside shaft diameter of 7.5mm
5.5mm hex socket with a nominal outside shaft diameter of 8mm
Slips perfectly into the tight surroundings of most rims
Works with wheels made by numerous manufacturers including, but not limited to: FSA
Blackwell
Planet-X
HED
Rolf
Bontrager
Campagnolo
Mavic