Product Description Specifications:Function:dismantling and fastening chainringsType:pullerDrive Size:36 mm open-end wrenchCompatibility:locking rings with an outer diameter of 47 mm - 48 mm and 4 or 8 notchesSpecialized, Cannondale and FSA chainringsTechnical Information:Material:steel (4140)Features:for fastening and loosening Direct Mount lockrings with an outer diameter of 47 mm - 48 mmsuitable for lockrings with 4 or 8 notchesmade from heat-treated steelcoated for long durabilityManufacturer Number:LRT-3 Contents:1 x Manufacturer: Park Tool Company 1185 Eagle Lake Rd Shoreview MN 55126 USA info@parktool.com Distributor: GROFA Action Sports GmbH Otto-Hahn-Straße 17 65520 Bad Camberg Germany info@grofa.com