These tough steel Hinge Pins are the perfect spare part for your RC tool boxFeatures: Strong steel material for long-lasting durability 4mm Diameter, 44.5mm Length Polished finish for silky-smooth suspension action Includes:2 x Hinge Pin Lower - 4 x 44.5mmRequires:To be used in conjunction with #ARA320657, #ARA320644 and #ARA320654