The 00916 is a hexagon key manufactured by Wiha International. It is a wrench with a 5mm hexagon socket head and an overall length of 132mm. It is crafted from high quality steel for maximum strength and durability, and the surface is chrome-plated to protect against corrosion. The hexagon key is perfect for fastening and loosening hexagonal head bolts and screws, which is commonly used in various industrial and DIY projects.