An original BSA front brake anchor strap part number 67-5578 used but in good condition suitable for BSA B33 500cc OHV Single.BSA M20 500cc Side Valve Single.BSA M21 600cc Side Valve Single.BSA M33 500cc OHV Single.BSA A7 500cc OHV Twin.BSA A10 650cc OHV Twin Rigid / Plunger ( Spring ) / Swinging Arm Models fitted with 8 inch half width front hub 1950 onwards.