square spindle adaptor,square shaft adaptor inner size x outer size: 6x7mm,7x8mm,8x9mm Competitive prices, fast delivery square spindle adaptor,square shaft adaptorStandard sizes in stock availableSuggested delivery by DHL in small qty. Material: IronFinishing: pre-galvanizedSpindles also are in our productions lines: square spindle adaptor,square shaft adaptor,6x7,7x8