Advantage 1. Steel Prop is made of upper plate, inner tube, outer tube, pin,nut,sleeve and bottom plate. 2.The structure is simple and it's easy to assemble and disassemble, so it can be reused. 3.Steel Prop can be adjusted to different hight of the construction. 4.There are several kinds of Telescopic Steel Prop which are Middle East type, Spanish type and Italian type. 5.It's for supporting concrete slab, beam, timber and formwork which is strong and reliable for interior building construction.