Product Description Do you have a chain guide for the ISCG standard, but have noticed that your frame doesn't have a suitable mount for it? Don't panic - e*thirteen has the right adapter for this in its range, so you can clamp it to your bottom bracket. Crisis averted. Compatibility:only BSA bottom bracketsonly cranks with at least a 50 mm chain lineonly 1xManufacturer Number:ADP.ISCG.I05 Contents:1 x E*thirteen ISCG 05 to bottom bracket adapter Manufacturer: Perigeum Development Inc. DBA e*thirteen 1445 Technology Lane STE A9 Petaluma CA 94954 USA support@ethirteen.com Distributor: Cosmic Sports GmbH Leyher Straße 47 90763 Fürth Germany info@cosmicsports.de