Bronson Speed Co. G3 Bearings.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 & breakageStraight Edge Frictionless Shields.Pop off resistant.Holds 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 & oil circulating.Balls Out Technology.Eliminates shield and cage contact on impact for a go fast, stay fast bearing.High Speed Ceramic Oil.Nano-ceramic compounds for wear protection.moisture, rust, corrosion resistant.Factory Fresh Quality.Nitrogen filled shrink wrap, reduces metal & oil oxidation until ready to be ridden.