The spear, called lanza in Old Friulian, is a long, firm pole (commonly ash) surmounted by a thrusting blade of varying width and purpose. Some spears were predominantly thrusting weapons, while some had wider, flatter blades that enabled the user to cut with the weapon as well as thrust. The spear shaft was usually between six and ten feet in length, and some examples sported a crosstree below the spear head with which to block oncoming sword-blows.

Fiore de'i Liberi devoted a large section of his work to the lanza. The weapon makes use of the extra poste used in Fiorean poleaxe: