The Roberts 10-254 Power-Lok Carpet Stretcher is the most advanced power stretcher available. The switch handle locks into 17 different stretch/pattern holding positions. The low profile head with sidekicking platform makes it compatible with knee kickers. The 18-Inch tail block includes a foam wall protector and wheels for easy repositioning. Stretches up to 23-1/2-Feet with included extension tubes. Unit includes one power unit, tail block with wheels, three extension tubes, quick-lok tube, and durable carrying case with wheels.