<p>Guide wheel: 8T, the guide wheel is made of nylon fiber, which can effectively reduce the friction noise when the chain and the guide wheel are engaged</p> <p>Flywheel: Compatible with 11-28T flywheel</p> <p>Weight: Net weight 90g, with accessories 99g</p> <p>Product name:5-6-7 speed rear derailleur</p> <p>Applicable:for single hole frame, refer to the picture</p> <p>Converter-Usage:</p> <p>1. Put the arc gasket on the transmission mounting column of the frame</p> <p>2. Fix the converter to the mounting column with M5x6 screws</p> <p>3. Install the rear derailleur and fix it withmm 4x16 screws+ nuts</p> <p>Colour:C:Black-Red</p> <p>Material:alloy</p> <p>Package Contents:</p> <p>2 * 201 stainless steel M5x18 countersunk screws</p> <p>2 * 201 stainless steel M4x16 countersunk screws</p> <p>2 * 201 stainless steel anti-loosening nuts</p> <p>1 * 201 stainless steel M6x6 cup head screws</p> <p>1 * aluminum alloy converter</p> <p>1 * plastic arc gasket</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>