Voberry&reg; Best seller Repair Tools Tool Sprocket Chain Whip/Wrench Bicycle Bike Cycling Outdoor 100% Brand new and high quality! Compatible for: 8,9,10 Gear flywheel Designed to be used in conjunction with a cassette lock ring tool to remove cassettes from hubs.When remove flywheel, fixed wheel to prevent from damage It can also be used to tighten on screw-on freewheels Voberry is a protected trademark