1、1. [Suitable for most bicycles] The bicycle stem is suitable for most bicycles with a steering tube diameter of 28.6 mm (1 1/8 inch) and a handlebar of 31.8 mm (1 1/4 inch), such as mountain bikes and racing bicycles, city bicycles, folding bicycles and electric bicycles. 2、2. [Comfortable] The adjustable angle is ±85 degrees, and the handlebars and bicycle handles can be firmly placed in the desired position to effectively relieve neck discomfort and make the riding posture more comfortable and safe. 3、3. [Easy installation] The installation can be completed within a few minutes. Just connect the original front steering tube. The four-bolt handlebar clamp holds the handlebar firmly in place. 4、4. [Exquisite and durable] Bicycle handlebar extender is made of high-quality aluminum alloy, with smooth surface, exquisite workmanship and stable hand feeling. 5、5. [Wide application] Universal handlebar, suitable for most MTB mountain bikes, racing cars, fixed gear bicycles, etc. Please check the size of the handlebars and select the appropriate model accordingly. Name: Adjustable stem Material: aluminum alloy Colour: Black Length: 140mm/160mm/190mm Installation height: 35mm Handlebar diameter: 28.6mm Fork diameter: 31.8mm Adjustable angle: ±85 degrees Weight: 265g/293g/316g Hole spacing: 90mm/110mm/145mm Application: Suitable for most MTB mountain bikes, racing cars, fixed gear bicycles, etc. 1* Bicycle Stem