This unique socket adapter allow you to reduce the drive of your sockets without increasing your tool height. The low profile design allows for use in a wide range of applications. Great for working in tight areas. This adapter feature a magnet retention device to keep them attached to the socket. Designed for impact or hand tool use. Made from high-strength, heat-treated Chrome Vanadium steel and are treated with a Manganese Phosphate coating to resist corrosion. Adapter can be stacked if additional drive reduction is needed. Note: Installation guide not included, Please check as much as possible to make sure the item is what you need. Color: Black Material: Metal Package Contents: 2 x socket adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.