Plastic drive shaft cup used in motor boats for 500-600 class engines.
Dimensions:
- overall length: 39.4 mm.
- Inlet internal diameter: 11.7 mm. (in groove: 13 mm)
- internal diameter at the "outlet": 3 mm. (in groove: 5.8 mm)
- mounting hole diameter: 3.7 mm.
- mounting hole spacing: 24.9 mm.