XRAY has released Ball-bearing 8x14x4 Steel Sealed Oil 2 under Metal Bearings category
Top-notch ball-bearings ID x OD x degree (mm) = 8x14x4mm. Number of 2 pieces. These ball-bearings are degreased and lightly oiled with AeroShell Fluid 12 oil for maximum smoothness, longevity, greatest threshold and maximum performance.