WW1 Military Folding Oak Boot Jack & Boot Pulls - Hole Punch & Button Hook. Military campaign boot pull & jack set A solid oak folding boot jack which equals a case for the folding boot pulls. One boot pull features a hole punch and the other a button hook These campaign sets were used by the military during WW1 due to the boots often fitting badly. Measurements: Length of the boot jack - 32cm Width when opened - 13cm Inside diameter of the boot jack - 5cm tapering to 9cm Length of the boot pulls when unfolded - 10.2cm Total weight - 465g. Auctiva offers Free Image Hosting and Editing.