... and 6900 series.Deep groove,or single row radial,ball bearings are the most widely used bearings.They utilize ... This design permits precision tolerance, even at high-speed operation.· Ball bearings available materials : Carbon, Chrome & Stainless Steel. ... T,Western Union,Paypal etc.· Applications: Wheel, inline skate, roller hockey, cnc routers, skateboard, rollerblades, fishing reels, slotcars, atv, ...