Editorial Review TRB RC Precision Ball Bearing Kit, 440C Stainless Steel ABEC 3 with Rubber Seals. Fits: RC4WD Trail Finder 2 Note: Due to Manufacture model updates always verify your model sizes for proper application. Features: Stainless Steel 440C ABEC 3 Races Stainless Steel 440C Balls Rubber Seals to Help Fight Dirt Great for Use in Applications that May Get Wet Includes: Dimensions and Quantity as follows: ID, OD, Width: 5x10x4mm Qty. 8pcs # SMR105-2RS 8x12x3.5mm Qty. 4pcs # SMR128-2RS 5x11x4mm Qty. 19pcs # SMR115-2RS 5x8x2.5mm Qty. 4pc # SMR85-2RS 35 Total Ball Bearings *Part # TRB-500109