This is a set of bearings and shims. - 740zz bearings: 4 pieces - 0.1mm shims: 6 pieces - 0.3mm shims: 2 pieces - Suitable for 4mm handle shafts of Daiwa and Shimano reels. Perfect for those who need more bearings when replacing knobs, or for those adding extra bearings. - We can also accommodate additional shims. Please let us know via the question box, and we will create a dedicated listing for you. ※ There may be extra shims included! Due to their thinness, you may not notice that they are overlapping, and a few extra may be included. We will consider any extra shims as a service, so please feel free to use them.