50 mm (2") Disc LargeTWSS all purpose plastic filters are made for a wide range of filtering applications as well as being easy to install and maintain. TWSS filters are constructed from high quality plastics providing excellent mechanical strength and durability. The Water Sprinkler Shop filters need no tools for dismantling and extracting the disc element. The discs are grooved both sides and intersect to form the filtration element when compressed on the telescopic