VEVOR Pipe Stand, 2500LBS Heavy Duty Pipe Jack Stands, 27.2"-52" Height Adjustable V Head Pipe Stand, 45# Steel Folding Jack Stand for 1/2-12 inches Pipes

The length of the lower screw in the V-shape is 300mm.

This product is sold as a single unit.

The product description states that it has a robust triangular base for unmatched stability. According to customers, it is very stable.

According to the product description, it can be adjusted easily by twisting the handle to adjust height up to 52 inches and securing the preferred height with a quick-lock washer and screw mechanism.

Yes, it is foldable for easy storage. The product description states that it has a "Space-Saving Design: Foldable and detachable base for easy storage in tight spaces, optimizing convenience and organization on-site."