Applications - Maintain product that uses steel balls,such as ball bearings, turntable, drawer slides, casters, door locks. Uxcell Bike Ball Crank Bearing 20mm X 7 Balls, Stainless Steel Bicycle Bearings Replacement Bike Parts Silver 4 Pack Bearing Balls 1.5''inch Steel Ball Bearing 38mm Assorted Loose Bicycle Stainless Steel Ball Bearings Package Included - 10pcs 1-1/2 inch (38mm) chrome steel precision bearing balls. Performance - The surface is coated with a small amount of grease to improve lubrication and prevent corrosion and rust. The heat treatment process makes the bearing balls very strong and resistant to deformation over time Features - Wide range of applications(maintain industrial equipment or use for family DIY projects). The Ultimate Guide To Bicycle Bearings Size -1., 5''/38mm Diameter Grade G25 Precision Balls.