Bearing Balls For Bicycles And Machinery Precision Ball Sizes Bearing Balls,Solid Precision Bearing Steel Ball Precision Solid Steel Ball 49mm Sturdy and deformable steel ball, cost-effective Bearing Balls, Bearing Balls, Solid Precision Bearing Steel Ball, Big Steel Ball, 41 42 43 44 45 46 47 48 49 50 50.8mm Rounded 1pcs(60mm Highlight clean oilless waterless From hub bearings on car axles to slewing ring bearings in wind turbines, these types of balls serve as rolling elements in anti-friction capacities, providing efficiency and longevity to spinning and moving components Surface smooth flat steel ball is exquisite, smooth and smooth Precision Steel Ball 9 10 11 12 13 14 15 16 17 18 19 20mm Solid Bearing Steel Ball I4048248060 Widely used in the maintenance of bicycles, skates, casters, motorbikes, automotive industry, pump and valve industry, machinery and equipment.