BIQU Big Plastic Pulley Wheel with Bearing Idler Pulley Gear Perlin Wheel for 3D Printer (Pack of 5 pcs)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Outer Diameter: 23.89mm</li><li>Inner Diameter: 5mm</li><li>Hight: 10.23mm</li><li>Net Weight: 14g/pcs</li><li>Color: Black</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41nM019TXEL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41v8HKnI19L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31fH%2BlVPDuL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41Iddz%2B2OZL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41k10i10aSL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41CyIbXonRL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41DF3gfgI4L.jpg" noproxy>