Collet for RC boats are available here
Model: Joint Length-A=18mm
Joint Length-A=18mm Dia-A=2.3mm Dia-B=2.2mm
Priced for 5 Joints Length-A=18mm Dia-A=2.3mm Dia-B=2.2mm
Specifications:
L1=18mm
D1=2.3mm
D2=2.2mm
Application Fields:
2.3mm diameter for connecting motor shaft, 2.2mm diameter for connecting drive shaft.
..
£25.00
Model: Joint Length=28mm
Joint Length=28mm Dia-A=5mm Dia-B=4mm
Specifications:
L1=28mm
D1=5mm
D2=4mm
Application Fields:
5mm diameter for connecting motor shaft, 4mm diameter for connecting drive shaft...
£20.73
Model: U-V-Joint for engine Length=21mm
U-V-Joint for engine Length=21mm Dia-A=M5 Dia-B=4mm
Specifications:
L1=21mm
D1=M5
D2=4mm
Application Fields:
M5 diameter for connecting nitro engine shaft, 4mm diameter for connecting drive shaft...
£15.90
Model: U-V-Joint for engine Length=21mm
U-V-Joint for engine Length=21mm Dia-A=M6.35 Dia-B=4mm
Specifications:
L1=30mm
D1=6.35mm
D2=4mm
Application Fields:
6.35mm diameter for connecting nitro engine shaft, 4mm diameter for connecting drive shaft...
£15.99
Model: U-V-Joint Length=21mm
U-V-Joint Length=21mm Dia-A=3.18mm Dia-B=4mm
Specifications:
L1=21mm
D1=3.18mm
D2=4mm
Application Fields:
3.18mm diameter for connecting motor shaft, 4mm diameter for connecting drive shaft..
£15.89