





BRONZE
GRADE
high-speed bearings
Precision steel ball bearings
High-Speed Nylon retainer
Single removable rubber shield
Silver
GRADE
Six-Ball bearings
Six Precision steel balls
High-Speed Nylon retainer
Single removable rubber shield
GOLD
GRADE
ceramic bearings
Precision Ceramic Balls
Coated Races
High-Speed Nylon retainer
Single removable rubber shield





