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 (not present) is screwed into this assembly and secured within the bladder using a hose clip around the base of the lever assembly. War Department broad arrow marked. Excellent condition. Extremely difficult to find now. Also suitable for Harnessuits. Stock code MW17710.