This is the Greenfield SKS2 Stabilizer Aluminum Rear Mount Kickstand. The Stabilizer is great for a variety of applications. In fact, it is the stand of choice by law enforcement bike patrols throughout the U.S! It includes an extra wide rubber foot for superior stability, and won't interfere with pedal action or rear derailleur cables. Fits tube sizes up to 7/8" in diameter and frames with 22" of clearance or higher. Features: Certified Non-Corrosive Casting Polyester Powder Coat Black Dual Spring Pressure Plate Snap Action Mechanism Hardened Steel Pivot Pin Calibrated Stem 340 gram weight 305mm length NOTE: Will not work with disk brake applications.