The new KESLA 21RH-III harvester head can also be optimized for a wide variety of conditions, different wood and different base machines. The KESLA 21RH-III is a 4-knife harvester head with two rear delimbing knives, suitable for first or subsequent thinning, as well as for harvesting short rotation eucalyptus and acacia plantations with or without debarking. It is best suited for installation on 10-13 ton excavators or wheeled harvesters.