The pilum was a javelin commonly used by the Roman army in ancient times.
It was generally about 2 metres long overall, consisting of an iron shank about 7 millimetres in diameter and 60 centimetres long with pyramidal head. The shank was joined to the wooded shaft by either a socket or a flat tang and was usually made with softer iron.
This softness would cause the shank to bend after impact, rendering the weapon useless to the enemy or, if the pilum struck a shield it had the potential to embed itself, bending the shank on impact and forcing the enemy to discard their shield as it would become unusable without removing the pilum, a difficult and time consuming process.

Please note: This kit is the head, spike, mounting pins and washers only. No pole is included. The pole in the images is for demonstrative purposes.

Measurements:
Pilum Length: 780 mm
Metal Shank (not including spearhead): 100 mm

Butt Spike Dimensions: 130 mm x 25 mm
Pilum Weight: ~865 g
Buttspike Weight: ~100 g