OLS146 Tachometer Adapter Ring Fits OliverOne New Aftermarket Tachometer Adapter Ring Fits Oliver Models: 60, 66, 70, 77, Super 77, 88, Super 88, 660, 770, 880, 80, 90, 99, Super 99, Super 44, Super 55, Super 66, 440, 500, 550, 900, 950, 990, 995, 1250, 1250A, 1255, 1265, 1355, 1365, 1450, 1465, 1550, 1555, 1600, 1650, 1655, 1750, 1755, 1800, 1850, 1855, 1865, 1870, 1900, 1950, 1950T, 1955, 2 105, 2 150, 2 80, 2 85, 2050, 2055, 2150, 2155, 2255, 2270, 2655, 4 105, 4 150, 4 180, 4 80, 4 85