C Kind Couplings
The C Form coupling includes two regular hubs, one particular cushion set and collar with hardware.
Features
Better torque and bore capacity compared to the L-Line series jaw coupling
Elastomeric cushions are radially removable
Cushions available in SXB rubber and Hytrel
RRS and RRSC Variety Radially Removable 
Spacer Couplings
RRS Form couplings selection from sizes RRS090 to RRS225. The RRS Type
coupling includes:
RRS090 – RRS110:
2 Typical RRS Hubs
1 Spacer Assembly consisting of:
2 snap wrap spiders w/o ring
2 collars with screws
1 spacer
RRS150 – RRS225:
one Conventional RRS Hub
1 Standard RRSC Hub – Drilled for collar
1 Spacer Assembly consisting of:
two snap wrap spiders w/o ring
two collars with screws
1 spacer
Note:
RRS Kind Inch Hubs presented conventional with two set screws at 90°.
Functions
Normal API based spacers out there
Radially removable inserts
Typical Lovejoy hub style and design with more set screw at 90°