The 4000lb Capacity Heavy Duty Jib Forklift Attachment is a popular fork-truck attachment in the construction industry due to it's many and varied uses. It is designed for use on both straight -mast and extendable-reach type forklifts. The telescoping two section tubular steel boom manually telescopes from 6'9" to 12'0". Safety features include internal stop ensures telescoping section cannot be accidentally pulled all the way out and heavy chain and grab hook secures jib to forklift carriage. Specs: telescopes from 6'9" to 12'; fork pockets accept up to 7 1/2" wide X 3 1/2" thick forks; Load capacity: 1935lbs in position 10 to 4000lbs in position 1.