Gem Bids For Half Geared Half Rigid Sl-4 As Per Drawing No.35/1448/59 With Pilot Bore -40 Mm, Full Gearedcoupling Sl-3 As Per Drg No. 35/1448/68 With Pilotbore -30 Mm, Supply Of Half Geared & Half Rigidcoupling Sl-3 As Per Drawing No. 35/1448/59, Supply Of Full Geared Coupling Sl-2 As Per Drg No.35/1448/68