The main application of the product: product material is completed by aluminum alloy 6061 turning process? making it a better intensity. Installed in the middle of the handlebar and front fork? so as to adjust the handlebar height? especially suitable for long-distance riders.<br />Color: black<br />Material: aluminium alloy + steel<br />Overall height: approximately 121mm<br />Down tube inner diameter: about 28.3mm<br />Upper tube inner/external diameter: about 22.3/28.3mm<br />Screw diameter: about 5.78mm<br />Suitable models: ordinary MTB? BMX? folding mat car.<br />1 set x Bicycle bike stem riser ( 4 x aluminum alloy washer? 1 x long screw )<br /><img src="http://img6.eachbuyer.com/x21/p26/bq544_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x21/p26/bq544_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x21/p26/bq544_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x21/p26/bq544_4.jpg" />