Item Detail Table of Content Lifting Equipment, Cranes, Jacks, & Jack Stands Lifting Accessories Internal Air Line Kit for Dual Rolling Jack Operation Item Number: CLF44AK30 Supplied by CHALLENGER LIFTS INC (see all) log in for dealer pricing. DescriptionInternal air line kit for dual rolling jack operation. Fits 4030 and 44030 4-post series liftsWarranty90 days Product Specification Dimensions181" x 18" x 18" Weight25 lbs.