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SR4ZZ Ceramic Bearing Dry ABEC-5 1/4"x5/8"x0.196" inch Bearings
SR4ZZ Shielded Stainless Steel Premium ABEC-5 Ball Bearing
With SI3N4 Ceramic Balls
1/4" x 5/8" x 0.196" inch
SR4ZZ Shielded Premium ABEC-5 Ball Bearing, bearing is Stainless Steel bearing SI3N4 Ceramic Balls, Bearing is made of Stainless Steel and has Solid Ceramic balls (SI3N4).