Heavy-duty 6-inch lengthy clamp has an actual most opening of 2.5 inches.Thick spring materials can make sure the product is durable.Spring clip is made from nickel-plated steel, durable and anti-rust.The arc of the handle improves the comfort. The non-slip plastic hide protects the software surface.Very appropriate for carpentry, domestic ornament or industrial production. Suitable for wood, steel and fabric. Package Included: 1 x Spring ClampNote:No retail package.Transition: 1cm=10mm=0.39inchPlease allow 0-1cm error because of handbook measurement. pls make sure you don't intellect before you bid.Due to the variation between different monitors, the image might not replicate the actual colour of the item. Thank you!