Product name: Adjustable steel props Prop Type-Inner, Outer, Top/Bottom plates. Dia. 48.3×3.25 mm, Dia. 60.3×3.65 mm, 150×150×6.0 mm Dia. 48.3×4.0 mm, Dia. 60.3×2.4 mm, 150×150×6.0 mm Dia. 48.3×4.0 mm, Dia. 60.3×4.5 mm, 150×150×6.0 mm Adjustable Steel Props: Props are made of continuous welded steel tubes. Outer Dia.: 60.3 mm Inner Dia.: 48.3 mm *Special size on request.