Steel Wheel: 12 inch diameter / 30.4 cm; Material: Aluminum; Rope Diameter: Fits 5/8 inch to 1 inch; Weight: 8.3 lbs Dual New Improved Sealed - Scaffolding Lifting Pulley Safety Latch - Heavy duty swivel hook with safety clip; lifting pulley includes safety latch. Lifting pulley only, does not include arm or bracket. High Lifting Height and Fast Lifting Speed - Scaffolding hoists are suitable for various industrial applications; designed for outdoor use, portable, with high lifting height and fast lifting speed. Widely Used - Scaffolding hoists are intended to be suspended from building scaffolds to lift materials to workers, helping save time, effort and costs. Color: Silver Material: Iron Package Contents: 1 x Scaffolding Hoist Pulley Note: The package includes only the items listed above; other items are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.