This spanner set contains 8 spanners of various sizes each made from steel. The tools are broadly been used for fastening purposes by mechanics, plumbers, electricians and also can be kept inside the car for repair. The tools is strong and durable. Each spanner has two open jaws at both the end and the jaws are so ergonomically that the open end of the jaws perfectly fits the faces of the nuts. This helps in reducing the risk of slipping while using the spanner. The spanner set contain 8 spanners of the following sizes: 6x7mm, 8x9mm, 10x11mm, 12x13mm, 14x15mm, 16x17mm, 18x19mm, 20x22mm respectively.