Product Description Specifications:Function:installation and removal of chainringsType:pullerDrive Size:36 mm open-end wrenchCompatibility:for lockrings with 41 mm outer diameter and 16 notchesShimano chainring lockrings for XTR 9120, XT 8120, MT 900Shimano Direct Mount systemsTechnical Information:Material:aluminium (6061)Features:installation and removal of Shimano chainring lockrings for XTR 9120, XT 8120, MT 900 and other Shimano Direct Mount systemsprecisely manufactured for optimal fitCNC machinedManufacturer Number:LRT-4 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