Features:<br />Adopts aluminum alloy CNC cutting to ensure the accuracy of product use.<br />Material is aluminum alloy, hardness is much higher than the original steel chain wheel, strong and practical.<br />Can be used with many accessories for mountain bikes and can be combined with a variety of configuration options<br />Wide,Hollow Design,Ultralight.<br/>Specifications:<br />Mateiral: AL7075<br />Color: Black, red, gold (optional)<br />45T:<br />BCD: 130mm<br />Diameter: 195mm<br />weight: 80g<br />47T:<br />BCD: 130mm<br />Diameter: 205mm<br />weight: 85g<br />53T:<br />BCD: 130mm<br />Diameter: 225mm<br />weight: 110g<br />56T:<br />BCD: 130mm<br />Diameter: 235mm<br />weight: 120g<br />58T:<br />BCD: 130mm<br />Diameter: 245mm<br />weight: 135g<br />Package size: 200 * 100 * 50mm<br/>Packing List:<br />1 * Chain Ring