Check the listing for details. Square Door Knob Spindle 80x8mm with Spring, 2 Pack Door Handle Spindle Bar. Color: Gold, Condition: New. Listed at 14.88 USD. Square Door Knob Spindle, Carbon Steel Zinc Plated Spare Door Handle Spindle Bar Door Spindle Replacement Door Handle Parts for Most Mortise Type Door Knobs Vintage Door Control SystemsSpecificationPackage List: 2 x gold door knob spindle and compression springOverall Size: 80x8x8mm/3.15x0.31x0.31 inches (L*W*H)Dot Length: 14mm/0.55 inchesMaterial: Carbon Steel Zinc PlatedColor: GoldAdvantageThe door knob replacement spindle is made of carbon steel, ensuring that the square rod has excellent wear resistance and corrosion resistance, thereby extending its service life.The compression spring can provide additional stability, ensuring that the square spindle does not wobble within the lock cylinder, thereby enhancing the stability and safety of the door lock.