Full Ceramic Roces M12 5 US/ 4 - 7

5 US/ 4 - 7

- Memory buckle

These are the The liners from the Remz Haffey and HR skates

Medium: 260mm from axle to axle (Seba Street size 41-43)

Full Ceramic Roces M12 5 US/ 4 - 7When NASA started building moving parts which were required to withstand the environment of space they were unable to use liquid lubricants or grease which freezes at low temperatures. Full Ceramic refers to both the balls and the bearing races being made from a super hard Ceramic material (whereas most other Ceramic labeled bearings use a less effective hybrid of ceramic balls with steel races). Full Ceramic bearings spin with much less friction and