This 2-pack of TASK quick support rods (QSR) is available in 3-sizes: short (30 in. to 54 in.), medium (63 in. to 120 in.) and long (83 in. to 159 in.), plus an optional extension to suit numerous applications such as drywall, cabinetry, paneling, crown moldings, HVAC, dust barriers, temporary supports and more. It's your extra set of hands while on the job. The patented adjustment and locking mechanism makes QSR the toughest and most versatile support rod on the market. The micro-adjustment function works by twisting the rod body to add or reduce length using the reverse threaded feet. with a vertical weight capacity of 132 lbs. for the short quick support rod (T74500) and medium quick support rod (T74505), as well as a vertical weight capacity of 66 lbs. for the Long Quick Support Rod (T74490), the potential applications are endless. Be sure to check out all the companion accessories. Be sure to check out all the companion accessories. for over 50-years, TASK tools has manufactured professional grade tools to contractors and homeowners alike. The patented TASK quick support rod system provides an extra-set of hands - wherever they may be needed.