Compartments: 6 Compartments

textile and rubber upper

New conical bushing shape and formula

lubricated

but shorts when you need them

Bronson Mason Silva Pro G3 Bearings - Black feed-color-8.00" Compartments: 6 CompartmentsMason Silva Pro Model Deep Groove Raceways: Balls roll deep in raceway channels. Reduces side impact damage & breakage. Straight Edge, Removable Frictionless Shields: Pop off resistant, hold oil in, dirt and moisture out, easy to clean. Micro Groove Raceway Surfaces: Linear micro groove surfaces improve bearing lubrication, speed and spin. Max Impact Cage Design: Non distortion custom cage keeps the balls precision spaced. Micro grooves aid in oil