Product Description Insert / adapter for assembly and disassembly of Gates sprockets for Rohloff and Thread ON. Specifications:Function:Installation & disassembly of belt drive sprocketsType:special toolType:multi-toothCompatibility:Gates Rohloff or Thread ON rear sprocketsSize:19, 20, 21, 22 or 24-toothTechnical Information:Material:steelManufacturer Numbers:19 tooth:1040000220 tooth:1040000322 tooth:1040000424 tooth:10400005Contents:1 x Manufacturer: Universal Transmissions GmbH Walkmühlenstraße 195 99974 Mühlhausen Germany shop@carbondrive.net