Unused, Shimano Genuine 07 Speed Master Ishidai Electric Reel and other Roller Clutch/One-Way Clutch (Not for Sale) is for sale. This is a one-way clutch with a plastic part in the shape of a diamond flower, used in Shimano reels from a while back, such as the 07 Speed Master and electric reels. Compatible with both left and right sides. Replacement requires SST (Special Service Tool) (Not for Sale). If the handle reverses... or if there is extreme discomfort when reeling, etc. This is an important part for the rotation system. The item for sale is one piece. If you don't know the compatible models, please comment. [New RI5558] I will check for you. No price negotiations. Will ship via Rakuraku Mercari.