Star knob for hex screws according to DIN 931 and DIN 933 in sizes M3, M4, M5, M6, M8, M10 and M12

The handles feature a precisely fitting, integrated hexagon socket, which is exactly matched to the respective screw size. This ensures positive power transmission when tightening and loosening. Each handle also comes with a matching cover cap that securely snaps into a groove and therefore cannot be lost

https://makerworld.com/en/models/1090089-star-grip-hexagon-screw-m3-m4-m5-m6-m8-m10-m12?from=search#profileId-1083399