Wrenches features: Made of premium steel with mirror plated finish for strength and anti-corrosion. Reduces wear and increases torque on fasteners by placing force on fastener walls rather than fastener corners. Standard and deep well sockets deliver balance of reach and torque. Die-stamped size markings are easy to read and quick socket identification. Features Color: Silver Material: Steel Size: 8.60 x 2.30 x 2.30cm/ 3.38 x 0.90 x 0.90 inch It is suitable for most common plugs and is widely used in the disassembly of automobile and motorcycle parts The inner and outer ends of the double-ended socket wrench are equilateral hexagonal hollow tubes. The width between the opposite sides of one hexagon is larger than the width between the opposite sides of the other hexagon. The sleeve wall between the two ends of the socket wrench has an urging hole perpendicular to the wall of the sleeve. When used with the rod, it is easier to handle and more powerful.