Altec offers both telescoping and articulating (knuckle boom) cranes. Telescopic and articulating cranes offer strategic advantages based on their intended use. Telescopic boom truck cranes are available with sheave heights ranging from 80 to 207 feet (24.4 m to 63.1 m) and load ratings from 18 to 45 ton (16.3 t to 40.8 t).