... pully block, mini pully block, PE cable block, cable pully block, fasten cable block, steel cable pully, snatch block ,the large diameter ... wire-released pulley; Cross pulley; Pulley for optical cable; Pulley for wire-dividing,with first-glass art. We ... . Feature: Usage:used in protecting conductors, communication lines,fiber optic cable,OPGW or ADSS in the overhead transmission line construction. ...