Size: 16mm-18mm Material: Carbon steel, Alloy casting, Stainless Packing: Cartons or Gunny bags or Blister ... pulley, steel pulley, snatch block model S, opentype, with hook, single wheel, regular woof block ,single wheel with shackle,HC ... , H.D.G. Korea type block ,single wheel with hook, close type, rigging block, greentackle, plate block with swivel ... on. Open Type Pulley Block Triple Wheel With Hook