This rear spring compressor is for all Silver Cloud series.
The rollers are stainless and the included hardware is all Grade 8. The main channel and the arms are all powder-coated.
The instructions for the use of this tool start on page 23 of the SC Factory Workshop Manual, section H:
SC Rear Spring Compressor RH196
All British Tool Works tools are guaranteed for life. No receipt necessary. We will be astonished if one fails and we will ask plenty of questions, but it will be replaced post-haste or a refund given - your choice. But honestly, that's not gonna happen.