Made In USA. Melling suggests that a new properly installed oil pump pick-up tube or screen be a part of every oil pump installation. Melling oil pump screen installation tools provide an easy method for installing a press fit oil pump screen into the oil pump correctly without damaging the oil pump screen tube. Melling oil pump screen installation tools are precision manufactured from high quality materials for worry free performance every time. Melling offers oil pump screen installation tools for both 5/8 inch and 3/4 inch diameter tubes.