This filter has a magnetic drain plug that can be removed with the filter portion still threaded into the crankcase. Cheap insurance if your bike sits unused and may have had some oil drain from the tank into the crankcase, you can simply remove that plug drain the case and then you are ready to go. This Crankcase Oil Filter fits 1969-1979 Triumph 650 750 T140 TR7 T120 TR6 models and replaces Triumph OEM# 70-9336. Sold individually.