Sealey cv936 hgv air dryer cartridge chain wrench 60 160mm sealey cv936 p this hgv air dryer cartridge chain wrench from sealey has an 180 ordm pivoting handle suitable for filters with limited access heavy duty chain with spring locking mechanism for added security essential tool for removing commercial air brake filters p sealey cv936 hgv air dryer cartridge chain wrench 60 160mm