| Half collar | loose collar | main collar |
| coaster | uncoupling | flexible coupling |
| thimble coupling [joint] | ductility collar | gear coupling |
| magnetism collar | Deli collar | electromagnetism collar |
| en collar | Duochi collar | fixed coupling |
| bushing collar | ratchet coupling | disc collar |
| eon collar | Huchi collar | campaign collar |
| Hinge collar | collar junction | flexibility collar |
| Saile collar | flange coupling | universal coupling |
| compression coupling | fluid coupling | hydraulic coupling |
| rigid collar | crosshead | double universal coupler |
| odd universal coupling | Gear model collar | collar proofing |
| Mianxingchi collar | dynamotor collar | outside Dental formula collar |
| increaser | frangible coupling | Chixing flexibility collar |
| autoregulation collar | Floweriness Jianshi collar | inside Dental formula locking body |
| flange cone coupling | Lengthways Niuhe collar | balteum Platycephaly and Crosshead of collar |
| Characterize Closing Axletree of universal coupling | |