0.500 inch shaft with 1/8 inch keyway and 0.313 (8mm), 2mm keyed bore The bore of this adapter fits onto the 2.5" CIM Motor
WARNING: There is only a 0.016 inch thick wall of steel between the bottom of the 1/8" keyway and the 0.313" bore.
Specifications:
- Material: AISI-1045 steel
- Outside diameter: 0.497 - 0.499 inch
- Length: 0.75 "
- Keyway: 0.128 " wide
- Bore: 0.313 " with 2mm (.08") keyway
- Weight: 0.03 Lb