This is a set of Team Associated Servo Horns, intended for use with the Team Associated RC10 B74 Team 1/10 4WD Off-Road Electric Buggy to replace the kit supplied parts. This pack contains four servo arms. Includes: (1) Servo Horn, 23x18.5mm (1) Servo Horn, 25x18.5mm (1) Servo Horn, 23x20mm (1) Servo Horn, 25x20mm (1) Servo Horn Support Ring