Brass (not the more commonly found chromed) metal 'lever' used to operate the CO2 cartridge within the bladder (stole). The inflation lever consists of a 'J' shaped handle that pivots between lugs on the lever body, a locknut, and an adaptor, or sleeve, with a cutaway skirt. The CO2 cylinder is screwed into this assembly and secured within the bladder using a hose clip around the base of the lever assembly (available separately). War Department broad arrow stamped. Excellent condition. These levers also fit stoles fitted within Irvin/GQ harnessuits etc. Stock code MW17536B.