Made out of 40 mm N.B. "M" Tubes conforming to I.S.1161 or I.S.-1239 with provision of cups @ 500 rnm interval. Welded bottom are pressed from high quality steel as per I.S.1079 and the captive mobile top cups are made out of malleable casting. Both the cups provide firm grip to Ledger Blades & make the connection rigid and to endure rough site handling. Standards Sizes: 1.0M, 1.5M, 2 OM, 2.5M, and 3.0M & as per client's requirement.