Birzman Chain Keeper Chain Tool

Birzman Chain Keeper Chain Tool, gray. Birzman reference: BM23-CHAIN-KEEPER02

A Chain Keeper (dummy hub) compatible with 12mm and QR thru-axle dropouts without the need to change parts or adapters.

With a free-spinning, side-shifting pulley that allows for derailleur changes and a high-polymer spacer that provides abrasion protection against toe surfaces, this is a quick and easy tool to have on hand for maintenance work. routine maintenance and cleaning.