These Teng Tools wrenches are made from strong chrome vanadium steel. The set consists of 3 hook spanners, with 3 pin adaptors and 2 spare pins. Ideal for use to work on locking nuts which have a series of notches cut in their outer surface. The hook/pin is placed in one of the notches and the handle turned to loosen or tighten the nut. The wrenches are supplied in a handy storage tray with a removable lid and dove tail joints. Suitable for use on its own, or as part of the Teng Tools TC control system. The TTP08 8-piece set contains the following: 3 x Hook handles: 3/4 inch to 2 inch, 1.1/4 inch to 3 inch and 2 in to 4.3/4 in. 3 x Pin adaptors: 4mm, 5mm and 6mm. 2 x Spare pins: 6 and 8mm. TENTTHP08