Absoluteblack revolutionary OVAL GUIDEª chainguide is here. This is the only chainguide on the market that is designed specifically for Oval chainrings, keeping your chain secure at every single crank position. OVAL GUIDEª has unique adjustable chainline from 48-53mm making it compatible with every single bike setup.Weight: 17g including all titanium hardwareFits to:ÊSRAM S3 and Shimano E-type and E2. The mounting points must be attached to the main frameCompatibility: Any 1x10, 1x11 or 1x12 drivetrain with AB oval or round chainringChainline:Ê48-53mm (Boost compatible) by every 0.5mm using 4 spacers (included)Capacity:Ê26-34T Oval or 28-36T RoundMaterial:ÊBackplate: 7075 aluminium, Cage: GF + PA66 polymer composite, Bolts: Titanium Torx T25Included in the box: Complete chainguide, chainline spacer set (0.5, 1, 2, 3,5mm), 2x titanium M5 torx T25 bolts