RC10B6.3 FT Arm Mount C, wide, brass Brass version of the wide-pivot RC10B6.3 Arm Mount C Used to tune weight bias, moves weight further back in the car Weight=23g vs. 4g for the stock aluminum version Team Associated indicates this will work with: RC10B6.3 Team Kit - ASC90029 RC10B6.3D Team Kit - ASC90030