Tru Vision 230 series crank

Part #
308-1051 = Single drive 68, 85, 108 degree options
308-1052 = Single drive 93, 127 degree options
308-1059 = Dual drive 68, 85, 108 degree options
308-1063 = Dual drive 93, 127 degree options
308-1005 = Single drive 10-80 variable degree option