This is a brand new Stronglight Dural 5083 Inner Chainring, designed for Shimano 9 and 10-speed compact chainsets. It is made from high-quality machined 5083 Alloy and features a 5-bolt, 110mm fitting. The chainring has 38 teeth and is compatible with Shimano 9 and 10-speed drivetrains. Please note the picture is for illustration purposes; the size you are buying is listed above. This chainring is suitable for 8-10 speed setups and is compatible with Shimano 110mm BCD 5-hole configurations.