AMB RC4 HYBRID TRANSPONDER Made by MyLaps; MyLaps is a United States based company; parts are sourced from Global producers MyLaps part number 10R120; UPC 784695987227 This item works with: Associated Apex Touring V-Type, B44.x, MTA4, Monster GT, Monster GT 4.6, Pro Rally 4WD, ProLite 4x4, RC-10 B4.x, RC-10 B5 and B5M, RC-10 B6, RC-10 B6D, RC-10 F6 Formula 1, RC-10 original aluminum chassis, RC-10 T4.x, RC-10 T5, RC-10SC5M Short Course, RC-12R5.x, RC-18T2, RC-8 buggy, RC-8B3, RC-8B3e, RC-8e RC8.1e RC-8.2e , RC-8e Truck electric, RC-8T3, RC-8T3e, Rival Mini Monster Truck, Rival Monster Truck, SC-10 2WD, SC-10 4x4, SC-18, SC10B Buggy, TC-7 Sedan