#12-90-2002: 1/8″ NPT Female x 1/8″ NPT Female. #12-90-2112: 1/4″ NPT Female x 1/4″ NPT Female. After the expiration of the warranty period, MFI is available to assist with technical support. MFI is now lead by a highly skilled and experienced team which includes the founders, Arnold and Annette Wiesel, their son, Augustus Wiesel, and their daughter, Alex Wiesel.