Superstar Double Device Has anyone used these and how well did they perform compared to other chain devices, they seem a bit of a steel pricewise and I've already got a bash guard.

looks a lot like the DMR or Blackspire ones.

but its got bearings in so SSC wouldnt be my first choice.

Yeah, guess the bearings are gonna seize pretty quick though I can probably get some through work if they're standard, either that or make a bushing instead. The E13 from merlin isn't a bad price but some of them seem over the top £80-100 upward for a chain device.

ive got an E13 on one bike and a blackspire on the other – nothing to choose between them IMO.
a mate has the DMR which looks exactly like the SSC one, same thing, it does its job.

the bearings for the roller are cheap as chips.