The kris blade is called a or . Kris blades are usually narrow with a wide, asymmetrical base. The kris is famous for its wavy blade; however, the older types of kris dated from the Majapahit era have straight blades, as do more than half of all kris prior to the modern era. The number of curves on the blade (known as "luk" or "lok") is always odd. Common numbers of luk range from three to thirteen waves, but some blades have up to 29. In contrast to the older straight type, most kris today have a wavy blade which is supposed to increase the severity of wounds inflicted upon a victim.