Product Description The for racks with 11 - 16 mm tube diameter With the ORTLIEB adapter clamps, you can attach the QL3.1 mounting system even to racks with a thicker tube diameter between 11 and 16 mm. In the set, you will find mounting clamps and screws as well as several adapter inserts for different tube diameters. Compatibility:QL3.1 mounting systemRacks with 11 - 16 mm tube diameterManufacturer Number:E191 Contents:2 x Mounting clamp 11 - 14 mm2 x Mounting clamp 16 mm2 x Adapter insert 8 mm / 12 mm2 x Adapter insert 10 mm / 14 mm2 x Adapter insert 16 mm2 x Screw Manufacturer: ORTLIEB Sportartikel GmbH Rainstraße 6 91560 Heilsbronn Germany info@ortlieb.com