crow Props are genuine, come in a range of sizes and offered at competitive pricing. Beware of imitations with lower capacity thresholds. The original Acrow Prop was the first adjustable prop in the world,
2.5 Inch Adjustable Telescopic Steel Prop, For Building Construction, Shape: Pipe ; Shape, Pipe ; Diameter, 2.5 Inch ; Total Height, 5 Meter ; Usage/Application .