HIGH SPEED PRECISION BEARINGS - Used with skateboards, longboards, inline skates, inline skates, electric skateboards and provides the highest precision on the market. Precision superior to REDZ. PR-LUBRICATED WITH RACING HIGH SPEED LUBRICANT: Ultra-fast lubricant for guaranteed high speeds and minimal friction. The yellow shield seals the lubricant inside the bearing and wheel. QUALITY AND DURABILITY - Made of high quality lubricated ABEC-7 608ZZ steel. Protection against dirt, rocks, dust to extend bearing life and maintain accuracy. PREMIUM QUALITY AT FINE LOW PRICES: Bearings are built for racing and durability at a fraction Cost. Hand inspected before packaging to ensure the highest quality for customers. HASSUe-FREE MONEY BACK GUARANTEE: Built to outlast any other bearing on the market. If for any reason you are not 100 satisfied, please return your bearings for a full refund, no questions asked.