<div class="detailmodule_html"><div class="detail-desc-decorate-richtext"><div style="font-size: 18px;"><b>Features:</b><br><span style="background: white; color: #fff;">OOTDTY</span> &nbsp;<br>Make of aluminum Alloys materials, light weight, strong and enduring.<br>Easy to install, and can use 3/8inch wrenches(excluding) to install the crankshaft screw.<br>This product is used to fix the crank and crank of the sprocket.<br>It is suitable for mountain bikes and road bikes.<br>Standard thread, fit perfectly to keep water, dust and others out.<br><br><b>Specifications:</b><br>Materials: Aluminum Alloys<br>18mm/19mm/20mm<br>18mm size: about 18x12mm/0.71x0.47inch<br>19mm size: about 19x12mm/0.75x0.47inch<br>18/19/20mm size: about 20x12mm/0.79x0.47inch<br><br><b>Package Includes:</b><br>1Pc Crank Arm Screws<br><br><b>Note:</b><br>Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.<br><br><br><br><br><br><br><br><br><br><br> </div></div></div>