Extremely smooth-running due to special castors, ø 50 mm, made from polyurethane & polyamide This storage case is a sturdy, mobile aluminium box in that provides ZARGES quality, long service life & is a reliable companion. Optimum mobility through integrated 50 mm castors & pull-out handle or second sprung drop handle on the end face. The K 424 XC range is rounded off by a wide selection of carefully thought-out interior fittings & numerous solutions for easier handling.