This is the 5/16-24 Jam Nut (Short) & 8mm Bushing Adapter Kit from Tru-Turn.
Tapped 10-32 for cone screw. Used to mount Tru-Turn aluminum spinners onto the following engines:
OS Max .70-1.20 Surpass 4-Stroke Abitar 1.20 4-Stroke
OS Max .91FX and 1.40 RX OS FS-91
One Short Adapter Jam Nut
One Aluminum Bushing
1/2" End Wrench To Tighten
Tru Turn Aluminum Spinner
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