The Wiha Ring Ratchet Spanner Set, 12 Piece, is made from high-quality, chrome vanadium steel with a corrosion-resistant and easy-to-clean surface. The design enables high leverage without force, making it easy to open any screw connection. In addition, the end with the mouth is ideal for countering screws and nuts. With a jaw position of 15°, the jaw end is perfect for working in narrow spaces.Even when working with the ring ratchet, the user has a short return angle thanks to the fine toothing with 72 teeth and maximum comfort when working in cramped working environments thanks to the double hexagon. Conforms to DIN 3113. This 12 Piece set is supplied in a practical holder. The holder can be opened with just one hand in order to remove the right size from it. Its non-slip surface helps to ensure a strong hold even in oily or wet work situations. Contains the following sizes: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 & 19mm.Additional Information:• Metric/Imperial: Metric• Min. Size (mm): 8• Max. Size (mm): 19