Air Filter / Shindaiwa 20056-81740Pack Size:1Shindaiwa 20056-81740J. Thomas SH-740, NHC 207-7131Shindaiwa B450, C27, C270, C350 and RC45 brushcutters; PB270 power Brooms; T27, T270 and T350 trimmersOD: 2 3/8 ", Height: 3/8 "