Steel Wheel: 12inch dia/30.4cm; Materail: Aluminum; Diameter of rope: For 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 with safety latch. Lifting Pulley only does not include arm and bracket. High Lifting Height and Very Fast Lifting Speed - Scaffolding hoists can also have many other uses in all industries as they are designed for outdoor use, they are portable, have high lifting height and very fast lifting speed. Widely Used - Scaffolding hoists are designed to be hung from building scaffoldings to lift building materials to tradesmen, saving time, energy and money. Colour:Silver Material:iron Package Contents: 1 x Scaffolding Hoist Pulley Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.