27 KOREAN TYPE BLOCK
28 BLACK BLOCK
30-D SWIVEL DOUBLE HOOK PULLEY
28-B BLACK BLOCK · CAST IRON
30-C SWIVEL SINGLE HOOK PULLEY
28-D BLACK BLOCK ·CAST IRON
28-E BLACK BLOCK ·CAST IRON
29 GALVANISED MALLEABLE IRON (CAST STEEL)BLOCK WITH SINGLE SHEAVE
29-A GALVANISED MALLEABLE IRON (CAST STEEL) BLOCK WITH SHEAVES
