Tender For supply of helimax triple stage, bevel helical gearbox of type &size ckc-280 with 20.345: 1 ratio, rh handling , helimax triple stage, bevel helical gearbox of type &size ckc-280 with 20.345: 1 ratio, lh handling , helimax, triple stage, bevel helical gearbox of type & size ckc-280 with 16.054: 1 ratio