A necessity for cyclists,useful and practical to use, which can be converted ordinary bicycle into disc brake bicycle&#xff0c;which makes it not easy to affect your cycling.<br/>Features:<br />Converts none disc frame into disc frame,so you can install a disc brake on your bike. <br />Made of aluminum alloy and stainless steel material,durable to use.<br />The rear triple-cornered shape is a normal triple-cornered,and the wheel set must be a quick-release wheel set.<br />NOTE: This adapter is not the common-use model,please ensure the size before ordering.<br />Easy to install and convenient to use.<br />Fits for 160mm disc rotors.<br/>Specification:<br />Material: Aluminum alloy &#43; Stainless steel<br />Use Tool: 4mm/5mm Hex key (not included)<br />Size: 122 * 80 * 22 mm / 4.8 * 3.1 * 0.9 in<br />Package weight: approx. 119 g / 4.2 oz<br/>Package List:<br />1* Adapter