5mm X 6.35mm Aluminium Rigid Shaft Coupling

5mm x 6.35mm Aluminium Rigid Shaft Coupling is made of machined aluminium, they can be fit/connect to two linear shafts/rod when they perfectly co-linear and will help reduce binding effects. A coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power. Couplings do not normally allow disconnection of shafts during operation, however there are torque limiting couplings which can slip or disconnect when some torque limit is exceeded.