¤ýLight weight and CNC Machined from solid billet carbon steel¤ýDesigned for scale and trail trucks¤ýBlack finish¤ýHeat treatment for durability¤ýSuper smooth operation (Precision splines)¤ýFully assembled¤ýCompressed Length: 110mm¤ýExtended Length: 138mm (Leaves 12mm spline engagement, recommended not to exceed this length)¤ýLaser engraved for authenticity¤ýMade to fit 5mm output shaftNote: For one truck, you will need 2 of this product.