This product is suitable for mountain bikes， road bikes and DIY upgrade and modification requires <br />Material: metal<br />Color: silver<br />Outer diameter: about 160 mm<br />Inner diameter: about 34 mm<br />1 x Disc Brake Rotor<br /><img src="http://img6.eachbuyer.com/x20/p36/bq289_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x20/p36/bq289_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x20/p36/bq289_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x20/p36/bq289_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x20/p36/bq289_5.jpg" />