1、Hollow Design: The bike stem features a hollow design, which ensures robustness with strength compatible with light weight 2、Scope of Application: The bike handlebar stem riser is suitable for mountain bikes, suitable for DIY, modified or upgraded bikes 3、CNC Process: The bike handlebar stem adopts full CNC process, which ensures that the appearance is glossy and not easy to hurt hands 4、Aluminum Alloy: The bike stem riser is made of aluminum alloy, which is wearable and durable, and has a long service life 5、Easy Replaceable: Operation is simple and convenient, mountain bike stem can be used without complicated process, providing you with a more comfortable riding experience Item Type: Bike Stem Material: Aluminum Alloy Angle: -17° Handle Diameter: Approx. 31.8cm/12.5 in Front Fork Diameter: Approx. 28.6cm/11.3in 1 x Bike Stem