A pulley apparatus (10), includes a dram (12) having a central axis mounted between two side plates (14, 16) for receiving a rope (120) passing around the drum. The dram (12) defines a cylindrical surface for receiving a rope or line. The pulley apparatus includes holes (14a, 16a) for hanging or supporting the pulley from a hook karabiner or the like. A rope guide means (30, 32) is defined on the underside of the pulley adjacent the dram and passing over the cylindrical surface of the dram for guiding the line to wrap around the central part of the dram and inhibiting overran of ropes. The guide means comprise two curved blades (30, 32) which extend from the side plates and bow out towards the center of the dram to define a convergent-divergent wasp-waisted passage for the line to pass through. A second single, freely rotatable sheave (40) is mounted to the apparatus between the lower ends of two plates (42, 44) whose upper ends are pivotally mounted to the side plates, and hangs below the guide means in use.