During Tai Bwo Wannai Trio, the black spear may be used with poison karambwan paste to create the black spear (kp). The (kp) spear has no use after the quest, but can be cleaned with a cleaning cloth to get back the black spear.
There is no white spear. This makes the black spear one of only a few pieces of black equipment that has no white equivalent.
There used to be glitch in which if the player didn't have the 10 Attack requirement to wield the spear and attempts to wield it, a message in the chat box would appear saying: 'You need a Ranged level of 10.'
Originally, although other metal spears had an attack speed of 5, the black spear only had an attack speed of 4. This was most likely an oversight by Jagex that occurred when they first increased the attack speed of spears with the release ofBarrows.
When poisoned however, the black spear had the correct attack speed of 5.
Before the Evolution of Combat, this item only required 10 Attack to wield. Now it requires 25 Attack.