... . It's used for elevator and derricking machinery6. Various constructions: (FC/IWR) 6 x 19, 6 x 37, 6 x 12 + 7FC, 6 x 19S(W ... ), 6 x24, 6 x 25FI, 6 x 29FI, 6 x 36SW, 6 x 7, 6 x 37, 6 x 31SW ... , 7 x 7, 7 x 19, 18 x 19, 18 x 19S, 18 x 7, 36 x 7, 1 x 19, 1 x 12 ... , 4 x 9