ITEM NAME:Bike Chain Guide High-strength Lightweight Portable Safety Anti-collision CNC Al Product Description Description: ZTTO Bicycle Chain Guide 31.8 35 CNC Aluminum Alloy Adjustable E Type Clamp Mount Chain Guide for MTB Mountain Bike Accessories Feature: Use ultralight high-strength AL7075 Aluminium Alloy with high quality CNC machined, light weight but high strength. Specifications: Brand: ZTTO Material: 7075 CNC aluminum alloy, Nylon Size: Diameter 31.8mm~35mm/1.25-1.38" mount/E-type mount Weight: About 52g Packing: 1 chain guide, 4 washers, 1 frame protector Notes: 1. There may be slight size deviations due to manual measurement, different measuring methods and tools. 2. The picture may not show the actual color of the item because of different photographing light, angle and display monitor. Included: 1 X Bicycle Chain Guide.Use ultralight high-strength AL7075 Aluminium Alloy with high quality CNC machined, light weight but high strength. Included: 1 X Bicycle Chain Guide. Material: 7075 CNC aluminum alloy, Nylon. The picture may not show the actual color of the item because of different photographing light, angle and display monitor.