Drive shaft diameter]: 9mm
[Drive shaft length]: About 63mm
[Thread diameter]: The end of the drive shaft is M10, with 2 washers for holding the grinding wheel or grinding wheel with a hole diameter of about 20mm.
[Clamp size]: It can hold motor or hand drill with a diameter of about 43mm
[Overall height]: about 7 cm
[Chassis aperture]: 6mm (fixed hole pitch is 7cm and 9.2cm, the value is for reference only, the exact value should be measured by yourself after purchase)
[Chassis size]: 10.9*8.8 cm
[Chassis thickness]: 2 mm
[Base size]: 110*88*2mm
[Base 4 hole diameter]: About 6mm
This product will work well with this motor and coupling.