Power-Lok Stretcher, 23 1/2 Ft Cap, W/CaseMfr #: 10 254 Stretch up to 23. 5 ft. with included extension tubes Steel handle on head for better grip and repositioning while foam wall protector keeps walls safe Swivel head for stretching angles or corners Unit includes one power unit, tail block with wheels, three 3 ft. extension tubes, adjustable locking tube, transfer tube, and the single interlocking wheeled stretcher carrying case Variable pin penetration for different carpet thicknesses