4x8 Rubber Sealed Ball Bearings (10) 4x8x3 for Traxxas 1/16 Slash 4x4 Traxxas 1/16 Summit Traxxas 1/16 E-Revo TRA7019 Rubber Sealed Ball Bearings have maximum protection, and are ideal for off-road racing. They protect well against exposure to dust, dirt, and moisture, which can destroy bearings. Includes ten (10) replacement 4x8 Ball Bearings for Traxxas RC Vehicles (or any other applications where 4x8x3mm MR84 bearings are required). Advantage Bearings have been run by some of the fastest racers in the world and have won multiple ROAR US National Championships. Over 250,000 bearings have been sold to satisfied racers all over the world! Meets/Exceeds OEM Specifications for Traxxas 7019 (TRA7019) 4x8 Ball Bearings, used in many Traxxas models. Please reference your manual for required sizes and installation instructions. Known to be Compatible With: Traxxas 1/16 Slash 4x4, 1/16 E-Revo, 1/16 Summit, LaTrax 1/18 Rally, Teton, and SST