This item works functionally with high quality aluminium alloy material. A wonderful accessory for cyclists.<br /><br />Features:<br />High quality aluminium alloy material? very durable.<br />Lightweight and easy to use.<br />Suitable for 10mm diameter of the tooth disc screw of the bicycle.<br />It can fix the chainwheel tightly and work functionally.<br />Colorful style? suitable for personality modification.<br /><br />Specifications:<br />Material: Aluminium alloy 7075<br />Color: Red / Golden / Blue / Titanium / Black (optional)<br />Diameter: Approx. 10mm / 0.39in<br />Height: Approx. 8mm / 0.31in<br />Item Weight: 2g / 0.07oz<br />Package Weight: 13g / 0.46oz<br />Package Size: 13 * 9 * 0.8cm / 5.12 * 3.54 * 0.31in<br /><br />Package List:<br />5 * Bicycle Tooth Disc Screw<br /><br />Note:<br />Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.<br /><br><img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/B/Y2098B/Y2098B-1-6ae9-Z6Ae.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/B/Y2098B/Y2098B-1-6ae9-kVZg.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/B/Y2098B/Y2098B-1-6ae9-TtMP.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/B/Y2098B/Y2098B-1-6ae9-eWQl.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/B/Y2098B/Y2098B-1-6ae9-YhFM.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/B/Y2098B/Y2098B-1-6ae9-Y0vz.jpg" /><br>