When configured with optional pulleys, the OX BLOCK™ can be used to create a 4:1, 5:1, or 6:1 mechanical advantage reducing the amount of force needed to lift heavy loads. The advantage of the BuckRigger™ pulleys by Buckingham is the swivel side plate that allows for quick and easy rope installation without removing pulley from the connecting device. The double sheave pulley with swivel eye features a 1/2″ rope capacity and a WLL of 1800 lbf
