Du-Bro In-Line Fuel Filter (Large) Part No: 341. Constructed of two threaded aluminum parts which separate for ease in cleaning. Works for both gas and glo fuels. 130 micron mesh screen filter to filter out the smallest of particles and an o-ring for a positive, no-leak seal. The Large Scale In-Line Fuel Filter is made for bigger engines that require more fuel filtering capacity. Dimensions: 1.25" (28.575 mm) L X 9/16" (14.29 mm) W