CMI Small Rigging Pulley Black Moveable Aluminum Cheek Plates. Features and specifications: Aluminum Cheek Plates and Sheave. Moveable cheek plates for easy insertion anywhere in a line. Capacity: 5/8″ Diameter Rope Tensile Strength: 6000 lbs. Sheave Diameter: 2.375″ Pulley Height: 4.25″ Pulley Width: 3.25″ Weight: 0.45 lbs. Manufacture: CMI