Features: 1>The model of the stem raiser of the bicycle 2>The main purpose of the product is: It is installed between the stem and the front fork to increase the height of the handlebar as an adjustment, which is especially suitable for long-distance riders. 3>The material of the product is finished with aluminum alloy 6061 turning process, which makes it have better strength. The 3 screws are steel, and there are 2 1cm and 2 0.5cm aluminum washers. 4>Surface treatment: aluminum oxidation. 5>Color: black, silver, red, blue, gold 6>Size: Height: 115CM, inner diameter of the lower tube (contact with the front fork): 28.6MM. outer diameter of the upper tube (fitting with the stem): 28.6MM. 7>Suitable models: general mountain bikes, BMXs, folding pad vehicles are more