Durable composite cage made from more than 43% bio-based plastics from renewable resources such as castor beansCompatible with all frames, but especially good for frames with smaller inner triangles and less clearanceLow slung design allows input and removal of bottles from a wide variety of anglesElastomer mid section adjusts to different sizes and shapes of bottles activelyStandardBio CompositeSoft BlackBraze-onUPC/EAN/GTIN: 8020775043912