Alu radio dish mounts enable more solid radio meal mounting while reducing the chance stripped threads. Newly-updated alu seems allow small throttle servo become installed in radio dish, and center gear be correctly tensioned. Kept alu remain allows tighter gear stress adjustment. Ultra-strong construction for very long lifespan and durability in most likely the many extreme battle conditions. CNC-machined from premium Swiss 7075 T6 aluminum. Degree of 2 pieces (left & right).