K&N RD-0700 UNIVERSAL Clamp-On Air Filter 2-1/2"FLG, 3-1/2"OD, 4"HDescription K&N RD 0700 UNIVERSAL Clamp On Air Filter 2 1 2"FLG, 3 1 2"OD, 4"H K&N Universal Air Filters are designed and manufactured for a wide range of applications, including racing vehicles, radio controlled cars, generators, snowmobiles, and tractors. These filters accommodate various air intake angles and offset diameters, offering compatibility for many types of equipment. Each filter features ultra strong molded pliable rubber flanges that