Description Toopre Bicycle Chain Guide Frame Mount For 30T to 40T Round Chainrings. The Toopre Bicycle Chain Guide Frame Mount is a highly adjustable front chain guide. It fits down tube outer diameters from 27.2mm to 34.9mm. Note: Professional installation is recommended. For Oval Chainrings – The maximum size is 38T. Specifications: Mount: Frame / Down Tube Tube diameter: 27.2mm to 34.9mm Chainring size: 30T to 40T Weight: 53g (typical) Brand: Toopre Model: TP228 What’s in the box: 1 x Toopre Bicycle Chain Guide – Frame Mount 1 x 34.9mm OD – 27.2mm ID Shim 4 x Spacer Washer 2 x Allen Key
