 Although it is considered to be a slashing weapon, the kalis can be effectively used for thrusts and stabs.The larger kalis was introduced back to Indonesia, especially in Kalimantan and Sulawesi, where it is known as sundang, sondang or Sulu keris (not to be confused with the súndang, another native Philippine sword from the Visayas).The kalis blade is defined as one that is wide on the base and double-edged.