Check the listing for details. Hangar 9 8 x 1mm Prop Adapter Kit HAN99051 Spinners & Hub Nuts. Condition: New. Listed at 11.98 USD. Key FeaturesCNC machined from bar stock aluminum for superior qualityStandard 10-32 single bolt mounting system makes it interchangeable with TruTurn adapter kitsAdapter kits available for all standard crankshaft sizes to make it easy to adapt to all glow, gas and EP optionsOverviewHangar 9 has the solution for general and large electric air customers looking to complete the look of their plane – an exceptional, perfectly balanced aluminum spinner assembly. Hangar 9 spinners are the only spinner assembly manufactured to provide a high-quality product at a value price. There are six spinner sizes ranging from 2.5 inches to 3.5 inches. There are also five adapter kits, making it easy to adapt to all glow, gas and electric power.