Uxcell a15102300ux0519 RC Propeller Adapter RC Plane 4Mm Shaft 6Mm Prop Fixed Dia Propeller Motor Adapter Holder Country of manufacture: China; material: aluminium alloy Net weight: 8G; Package Content: 1 x RC Propeller adapter Main Color: Silver tone; fit for: 4mm Dia shaft Fit Propeller hole Dia: 6mm/0.24" Total size: 32 x 15mm/1.3" x 0.6"(L*max D)