This Maillard “MT” double cog fits Maillard 700 compact 7 speed “CC” body series freewheels in smallest position. Will also work on Sachs 7-8 speed ARIS freewheels in friction shift mode. Indexing may be affected when used on ARIS 7-8 speed freewheels depending on cog combination used, but works in friction mode. Cogs are seperable with a pair of chain whips. Silver finish.