Manfrotto 244ADPT38AR 3/8Anti–rotation adapt. compatible with 244Mini and 244Micro

3/8”Anti–rotation adapter is compatible with the following friction arms: 244Mini Friction Arm, 244 Micro Friction Arm, 244 Micro Friction Arm with Anti-rotation. The adapter can be replaced using the included hex key. The Anti-rotation system is compatible with Manfrotto products: 055 series, 190 series, and 386B-1 Nano Clamp.