This is a Ball Bearing: 4pcs (4x7x2.5mm) For the Team Durango 1/10 Electric 4WD Off Road Buggies and Short Course Truck FEATURES: This is an official Team Durango spare/optional part set constructed from high quality materials. INCLUDES: Four ball bearings COMMENTS: This is a standard part for DEX410 1/10 Electric 4WD Off Road Buggy DEX410R 1/10 Electric 4WD Off Road Buggy DESC410R 1/10 Electric 4WD Short Course Truck (TDRC0130) DEX410v3 1/10 Electric 4WD Off Road Buggy (TDRC0120) DEX410Rv3 1/10 Electric 4WD Off Road Buggy 5/18/12 pjw ir/jxs