... Block Cable Stringing Pulley Block 660 mm Nylon Large Diameter Bundled Conductor Galvanized Pulley Block Stringing Block; ... Transmission Pulley Block; Application:660 mm MC Nylon large diameter bundled conductor galvanized pulley block stringing block ... -660560≤500560660100100HHQ-6607100≤500560660100186HHQ-6607100≤630560660110198There are also large diameter 916mm,822mm,508mm and small diameter 408mm, ...