Check the listing for details. Impact Hex Bit Socket Set H4 - H12 Socket 3/8" Drive Cr-Mo Steel Metric Socket. Condition: New. Listed at 39.42 USD. Attributes:* Driver Size: 3/8 Inch* Bit Size: H4 H5 H6 H7 H8 H10 H12* Total Length: 60mm / 2.36 Inch* Bit Length: * Material: Chrome Molybdenum Steel (CR-MO)What Is Included:* 7 Pieces x Bit SocketApplications & Features:--- Impact Hex Bit Socket is crafted from strong Chrome Molybdenum (CR-MO) Steel. After heat treatment and forging, it has high hardness and good toughness.--- The hex bit socket features laser-etched size markings that are easy to read even in low light, making it easy to find the right socket.--- The black phosphate finish protects the hex bit key socket from rust and corrosion, absorbs and retains oil, and repelling moisture.--- The independent pin-hole base design adds extra security and works with a pin and O-ring system to ensure secure retention of the socket.