RRS and RRSC Style Radially Removable Spacer Couplings
RRS Sort couplings range from sizes RRS090 to RRS225. The RRS Type
coupling includes:
RRS090 – RRS110:
2 Standard RRS Hubs
one Spacer Assembly consisting of:
2 snap wrap spiders w/o ring
2 collars with screws
1 spacer
RRS150 – RRS225:
1 Typical RRS Hub
one Standard RRSC Hub – Drilled for collar
1 Spacer Assembly consisting of:
two snap wrap spiders w/o ring
2 collars with screws
one spacer
Note:
RRS Style Inch Hubs offered typical with two set screws at 90°.
Attributes
Standard API based spacers out there
Radially removable inserts
Regular Lovejoy hub design with added set screw at 90°
C Kind Couplings
The C Variety coupling consists of two regular hubs, a single cushion set and collar with hardware.
Capabilities
Greater torque and bore capacity than the L-Line series jaw coupling
Elastomeric cushions are radially removable
Cushions out there in SXB rubber 
and Hytrel