ZFY-T12-3 Stainless L/R Hand Trapezoidal Screw 12mm P3 + 2 Brass Nuts CNC/3DUS$139.75PriceLength*SelectQuantity*Add to CartBuy Now1 pc left-and-right-hand stainless steel trapezoidal lead screw, Diameter 12mm, Pitch 3mm, with 2 matching brass nuts, overall length 150mm, ends unmachined