Bronson Speed Co. Raw Next Generation Shieldless Bearings Designed For Today's Skateboarding. Free At Last! - Shield Free Design -no more shields to get damaged or pop off -no shield grooves in either race for no crud, dust and dirt build up -super fast sound and spin fast, slick & non-stick - tungsten coated races -micro-thin tungsten dry lubricant coating is fast, slick and non-stick to minimize dirt, dust and crud build up. -tungsten coating is an extremely slick, low drag, long life dry film lubricant with a very low coefficient of friction the sound of speed - audible speed technology -fully open, high spin, and shield free raws are designed to enhance the sound of speed. -run your bearings with no shields? like a raw sound? this bearing is for you! 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 circulation balls out technology high speed oil -custom engineered light oil lubricant is water, oxidation and corrosion resistant for extended wear protection factory fresh quality -nitrogen filled shrink wrap, reduces metal & oil oxidation until ready to be ridden