Bronson G3 Skateboard Bearings-Rated ABEC 7.-Deep Groove Raceways reduces side impact damage & breakage.-Straight Edge Frictionless Shields holds oil in, dirt and moisture out.-Micro Groove Raceway Surfaces- linear micro-groove surfaces improve bearing lubrication, speed and spin.-Max Impact Cage Design.-Balls Out Technology eliminates shield and cage contact on impact for a go fast, stay fast bearing.-High Speed Ceramic Oil, moisture, rust, corrosion resistant to view our entire selection of Bronson products