Key especially indicated to open and close the bottoms of the boxes that are going to thread. Wrench 14.5 cm in total length, for funds ranging from 15 mm to 35 mm. It comes with 4 different jaw sets to open most boxes. Made of steel with the handle in striated aluminum, which makes it a light and easy to handle tool. It is supplied with a practical wooden box to store the key and the jaws.