Our articulating jib cranes are designed for 360 degree easy movement UNDER LOAD. Each knuckle has 2 tapered bearings for smooth, care free operation. Designed with a 5-1 factor making the ITNAC Articulating Jib Crane perfect for heavy duty applications. Available in various sizes and capacities; custom designs are also available. Options inculde: Air or Electrical collector rings for proper wire management, Braking system to better control the load movement.