ADJUSTABLE CONSTRUCTION- The height of this pipe jack stand is adjustable from 28' to 52' (The height doesn't include casters). Durable V-head supports the pipe of 1/8 to 12 inches/0.32 to 30.48 cm. HEAVY DUTY V-HEAD- The pipe stand is constructed of premium steel, rust- and corrosion-proof, durable for a long time. The lock washer ensures security and large capacity. Max lifting weight can reach up to 882lbs / 400 kg. PORTABLE & COMPACT DESIGN- The whole jack stand is folding. Storage won't take your much space. It also includes casters and meets your needs if you need to move your tool-easy carry and storage. GREAT STABILITY- The foot pads of this V-head pipe stand are widened. The strut tension plate features superior lateral support. Stability is enhanced when you are working in an uneven place. WIDE APPLICATION- Welding of heavy pipes, shapes, solids, and rounds. This welding pipe stand supports pipe during pipe threading, pipe hole cutting, roll grooving, etc.