A selection of small cartridge/canisters containing various lead refills. The contents are unknown, some may contain indelible copy lead which is poisonous and so great care must be taken when using.
Wood/Cork Case - 4.5cm long
Brass - 3.2 cm long
Aluminium - 4cm long
Green/Blue Top Aluminium - 3.8cm long
We do not know the widths/sizes of these leads nor which pencils they were designed to fit.