Catlog # 516 FOUR SHEAVE SAGGING PULLEY BLOCK These pulleys are used during final sagging of conductors. The pulleys are closed within the frame hence only end of the wire ropes can be passed across the pulleys grooves. The frames & pulleys are made up of alloy steel. It comes in “S” or “Eye” hook which swing around on its pivot done on top of the frame. The pulley rolls on ball bearing.