・ Features rubber seals to prevent the entry of dust and sand, extending bearing performance. ・ The size is the same as the bearings and collars that come standard with Daiwa S-type and Shimano A-type knobs (except for some). ・ Compatible with 4mm shafts of Daiwa and Shimano handles. Perfect for those who need extra bearings when replacing knobs, or for those who want to add bearings or replace plastic collars. ・ We can accommodate additional quantities, so please let us know via the question box. We will make it a dedicated listing.