Front derailleur with plastic washer? fit for pipe of diameter 31.8mm and 28.6mm to install.<br />The max backlash allowance is 48T.<br />The overall size is about 11.5*8*5cm.<br />Made of aluminium alloy and iron.<br />The surface of product has been chromate finished.<br />Brand: TOMOUNT<br />Item NO: QB1003<br />Color: black + silver<br />Size: appr.11.5*8*5cm<br />Material: the black part is made of  aluminium alloy? and the silver is iron? with chromate finished surface.<br /><br />Front Derailleur * 1<br />Plastic Washer * 1<br /><img src="//agdetail.image-gmkt.com/m430/185/326/842326185/img/agdetail.image-gmkt.com/185/326/842326185/img/img6.eachbuyer.com/x9/p100/cq928_1.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/185/326/842326185/img/agdetail.image-gmkt.com/185/326/842326185/img/img6.eachbuyer.com/x9/p100/cq928_2.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/185/326/842326185/img/agdetail.image-gmkt.com/185/326/842326185/img/img6.eachbuyer.com/x9/p100/cq928_3.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/185/326/842326185/img/agdetail.image-gmkt.com/185/326/842326185/img/img6.eachbuyer.com/x9/p100/cq928_4.jpg" />                                                        <img src="//agdetail.image-gmkt.com/m430/185/326/842326185/img/agdetail.image-gmkt.com/185/326/842326185/img/img6.eachbuyer.com/x9/p100/cq928_5.jpg" />