B12 connecting shaft
Specification: 16x33.5mm
Material: 20 steel with black surface.
Taper matching: B12 drill clamp, can clamp 0.6-6mm drill bit.
Hole matching: 5mm 6mm 7mm 8mm 10mm motor shaft
Concentricity: 0.02mm

Taper: The big end of the hole is 12mm; the small end is 11.1mm
Taper hole length 18.5mm

The connecting sleeve hole is matched with the motor shaft, and the outer surface of the connecting sleeve is tightly matched with the taper of the B12 drill clamp.