Quantity: one set The water filter kit includes one in-line in-line filter (40 mesh screen), one 100 mesh screen, 2 in-line washers and 3 filter washers. Garden hose in-line filters connect to pressure washer inlets, standard garden hoses and household faucets. The home needs to filter sediment or debris from the faucet into a garden hose or pressure washer. As a pressure washer water filter, it protects pressure washer components such as pressure washer pumps, water brushes, undercarriage cleaners, pressure washer hoses, spray guns and wands. As a garden hose filter, it protects pressure washer parts from clogging or damage from sand and debris. Male threads and 3/4" female. Maximum operation of the garden hose is 80 psi. Good quality product