Colnago by FSA OS-150 XTC Stem is a high-quality stem designed by FSA. It is made from AL6061/T6 aluminium alloy through a process of 3D forging and CNC machining. The stem features a carbon fibre composite 4 bolt front clamp and chromoly hardware. With a ±6° × 120mm angle, it provides optimal positioning for your handlebars. The stem has a handlebar clamp diameter of Ø31.8mm and a fork clamp stack height of 40mm. It comes in a sleek black anodized finish and has a glossy carbon 3K weave front clamp. The weight of the stem is 171g (100mm). This stem is a great addition to any bike and will enhance your cycling experience.