Manilla Rope Pulley Block,, Dia. of Sheave, Dia of Rope, S. W. L. in kg, No. Sheave, 3 1/2, 1/2", 100, Single, 31/2, 1/2", 150, Double, 3 1-2, 1/2", 250, Triple, 4", 5/8, 150, Single, 4", 5/8, 200, Double, 4", 5/8, 300, Triple, 4 3/4, 3/4", 200, Single, 4 3/4, 3/4", 400, Double, 4 3/4, 3/4", 500, Triple, 6", 1", 500, Single, 6", 1", 1000, Double, 6", 1", 1500, Triple, 7", 1 1/4 600, Single, 7", 1 1/4, 1500, Double, 7", 1 1/4, 2000, Triple, 8", 1 1/2, 1000, Single, 8", 1 1/2, 2000, Double, 8", 1 1/2, 2500, Triple, 10", 2", 1500, Single, 10", 2", 2500, Double, 10", 2", 4000, Triple