Description:<br><p>Bike rear derailleur pulley is made of high quality ceramic bearing + aluminum alloy material,whcich is anti-rust and corrosion resistant,sturdy and durable.</p><p>The inner ceramic bearing is ultralight and super lubricating,which can ensures its smooth working and provide you with a great using effect.</p><p>The rear derailleur pulley is used on rear derailleur for chain transportation and speed changing,which is a necessary accessary for bicycle.</p><p>Deep toothed guide wheel to reduce chain drop.Positive and negative tooth guide wheel can effectively inhibit the horizontal swing of the chain,so that the speed is more accurate</p><p>Easy to install,included a screw and 2 replaceable 4mm and 5mm bushing to enrich your installation choices.</p><br>Specification:<br><p>Material:Aluminum Alloy,Ceramic Bearing</p><p>Size:</p><p>11T - 41.4mm/1.63inch</p><p>12T - 50mm/1.97inch</p><p>13T - 50.7mm/2inch</p><p>14T - 58mm/2.28inch</p><p>15T - 59.7mm/2.35inch</p><p>16T - 68mm/2.68inch</p><p>17T - 66.8mm/2.63inch</p><br>Size_Chart:<br><br>Note:<br><p>1.Due to the light and screen difference,the item's color may be slightly different from the pictures.</p><p>2.Please allow 1-3mm differences due to manual measurement.</p><br>Package_Includes:<br><p>1 Piece Bike Rear Derailleur Pulley Wheel</p>