A CNC machined chain wear tool that is compatible with most chains including SRAM flat top chains \n Measures from the center of the chain roller for an accurate output instead of the side of the chain \n Also able to measure the lateral wear/play of a chain which is common in 1x drivetrains due to the extreme angles \n Compatible with all chains \n Abbey Tools are priced to be used as shop tools, not for resale \n Made in the USA: Bend, Oregon