General description Sleek and durable, the Sealey CV937 Air Dryer Cartridge Chain Wrench is designed for efficiency and ease of use. This essential tool is perfect for removing commercial air brake filters, making it a must-have for automotive professionals and DIY enthusiasts alike. Technical specifications Satin finished carbon steel body 1/2" Sq drive for use with ratchet wrenches Heavy-duty thin double chain Capacity: Ø73-170mm Model No. CV937