1, factory price 2, fast delivery, reasonable price, high quality 3, smooth and twist shank 4, cold & hot dipped galvanized Umbrella nailDescription Umbrella nail is also was called umbrella roofing nail. Mainly was used for connection of timber component or to firm plastic tile.Specification Material: Q195, Q235 drawn wireDiameter: 2.8-4.2mmLength: 40-80mmSurface treatments: electro galvanized, ...