Bought these large sockets purely to undo oil filter housings which do not require a lot of force just use a large size plastic nut (30mm plus) on top of the housing. Whilst I presume these sockets are capable, for me the 1/2\" drive is too small for the socket sizes of between 29 to 38mm, these more commercial vehicle socket size requiring a 3/4\" or 1\" drive given the high torque settings used on commercials, however as the nine sockets give a 1mm increment in size (37mm missing) they are an ideal set for occasional work on non commercials such as oil filter or drive shaft bearings. The 1/2\" hammer drive does limit the torque force used on these impact sockets to about 1200Nm where as 3/4\" and 1\" drive will enable 3 or 4 times more impact force for commercial use. For me the 1mm increment in size is more useful than the impact ability of these sockets, they are heavy duty but personally would not use them above 1000Nm impact force despite their robust size.
Heavy duty 
