Bronson Speed Co. G3 Next Generation Bearings designed for today's skateboarding. 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 & moisture out Easy to clean Micro Groove Raceway Surfaces Linear microgroove surfaces improve bearing lubrication speed & spin Max Impact Cage Design Nondistortion custom cage keeps the balls precision spaced Micro grooves aid in oil c...