Holy Lance
The Holy Lance, also known as the Lance of Longinus (named after Saint Longinus), the Spear of Destiny, or the Holy Spear, according to the Gospel of John, is the lance that pierced the side of Jesus as he hung on the cross.
Instrument of Jesus' crucifixion
"The New International Dictionary of New Testament Theology", dealing specifically with the crucifixion of Jesus, says it is most likely that the "stauros" had a transverse in the form of a crossbeam. "Secular sources do not permit any conclusion to be drawn as to the precise form of the cross, as to whether it was the "crux immissa" (†) or "crux commissa" (T). As it was not very common to affix a "titlos" (superscription, loanword from the Lat. "titulus"), it does not necessarily follow that the cross had the form of a "crux immissa"."