MRP 1x SLR Chainguide - 28-38t, ISCG-05, Carbon BackplateOne dropped chain is one too many. Eliminate dropped chains forever, so you can ride without interruption. The MRP 1x SLR ISCG 05 chainguide incorporates a lightweight carbon fiber backplate and easy to use setup and adjustment features. Carbon fiber back plate is incredibly strong and lightweight Works with 28 38t round rings (and 26 36t oval rings) 7mm of chainline adjustment (without use of spacers) so adjustments can be made quickly Works with