1. Bearing， without too much maintenance.<br />2. Same both sides， quick and easy installation.<br />3. Compact， fast speed up， good performance.<br />4. 24-speed and 27-speed can use， one rear derailleur needs two.<br />5. Metal material， does not rust.     <br /><br /><br />Name: bicycle rear derailleur 11T guiding wheel <br />Color: red<br />Material: metal<br />Size: inner diameter 9.0mm<br />        outer diameter 43.5 mm<br />        thickness 5.3mm<br />Cover hole diameter: about 5mm<br />Specifications: 11 teeth<br /><br /><br /><br />1 x Guiding wheel set (including 3 parts)<br /><br /><img src="//agdetail.image-gmkt.com/m430/321/340/842340321/img/agdetail.image-gmkt.com/321/340/842340321/img/img6.eachbuyer.com/x9/p100/cq190_1.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/321/340/842340321/img/agdetail.image-gmkt.com/321/340/842340321/img/img6.eachbuyer.com/x9/p100/cq190_2.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/321/340/842340321/img/agdetail.image-gmkt.com/321/340/842340321/img/img6.eachbuyer.com/x9/p100/cq190_3.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/321/340/842340321/img/agdetail.image-gmkt.com/321/340/842340321/img/img6.eachbuyer.com/x9/p100/cq190_4.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/321/340/842340321/img/agdetail.image-gmkt.com/321/340/842340321/img/img6.eachbuyer.com/x9/p100/cq190_5.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/321/340/842340321/img/agdetail.image-gmkt.com/321/340/842340321/img/img6.eachbuyer.com/x9/p100/cq191_1.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/321/340/842340321/img/agdetail.image-gmkt.com/321/340/842340321/img/img6.eachbuyer.com/x9/p100/cq191_2.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/321/340/842340321/img/agdetail.image-gmkt.com/321/340/842340321/img/img6.eachbuyer.com/x9/p100/cq191_3.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/321/340/842340321/img/agdetail.image-gmkt.com/321/340/842340321/img/img6.eachbuyer.com/x9/p100/cq191_4.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/321/340/842340321/img/agdetail.image-gmkt.com/321/340/842340321/img/img6.eachbuyer.com/x9/p100/cq191_5.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/321/340/842340321/img/agdetail.image-gmkt.com/321/340/842340321/img/img6.eachbuyer.com/x9/p100/cq191_6.jpg" />