Birzman 4 Notch BMX Freewheel Remover

The Freewheel Socket is compatible with BMX, single-speed freewheels or other similar 4-notch 41mm lockrings.
The socket is of 1/2" Drive and is compatible with the Birzman Torque Wrench 10-60Nm (bi-directional) (BM18-TW-10-60NM)