Used in direct-axis motor.The rc double cardan joint suit for RC Car Boat Robotics DIY
The rc boat u joint made of high quality metal material,durable in use.
Small and compact, comes with set screws,rotatable universal steering shaft u joint coupler.
A variety of sizes available to be chosen.
A good replacement for your old or broken one.

Item Name:3 Section U Joint Coupler
Material: Metal
Universal Joint Outside Diameter:12mm
Length:52mm;
Hole Diameter: 4mm to 4mm / 5mm to 5mm /6mm to 6mm(Optional)
Fastening Screw Size:M3
Color: Silver.
Weight:60g/2Pcs

Package List:
2 x Universal U Joint
8 x Set Screws