User:SusanStoate279

The first one is actually the coupling. It pertains to a gadget that is used to attach 2 shafts together at their ends for the purpose of transmitting power. There are actually two overall kinds of couplings, i.e. firm couplings and adaptable couplings. The past is actually made to draft two arrows with each other tightly to make sure that no loved one motion can easily occur in between them.

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