Features Large Torsion: Designed to have 5mm thickness, the spanner wrench can work under large torsion without bending. Firm Clamping: Ensures firm clamping with high accuracy, which will largely improve your working efficiency. Flexible Using: Can be applied to lathe clamping nut, CNC milling machine chuck, spring nut clamping and so on. Good Material: Adopting premium high carbon steel material, the C wrench is wear resistant and very durable. Easy Carrying: The hook wrench has a small size and a light weight, so both the storage and carrying are easy. Specification: Item Type: Spanner Wrench Product Material: High Carbon Steel Product Thickness: Approx. 5mm / 0.2in Scope of Application: ER lathe clamping nut, CNC milling machine chuck, spring clamping nut, CNC tool holder. Made of high quality carbon steel material, wear resistant and easy to use. Package List: 1 x Spanner Wrench Package List 1 x Spanner Wrench