ICE TOOLZ CHAINMASTER BOX

The IceToolz ChainMaster Box (Model #30C1) is a specialized dummy hub and chain-tensioning tool designed to protect your bike’s rear chainstay, dropouts, and rear derailleur when traveling or storing your bicycle without its rear wheel. It holds the chain perfectly taut and in position, keeping it from dropping, tangling, or scratching your frame paint. 

For rear chain stay, dropout, and derailleur protection when you travel. Adjustable to fit different length of axles.