The Wera 8740 C HF 9 Piece Zyklop 12 Hold Function Socket Set is a non-impact set with a smooth turning mechanism. The manual and machine sockets can be used both for hand and power tools use non-impact. Users need just one socket set for all applications. The smooth turning mechanism guarantees both secure and rattle-free storage, yet allows easy removal of the tool. The clamping of the screw is achieved by a flexible locking ball. The holding function is especially helpful in confined, hard-to-reach spaces, where there is no room for a second hand to secure the screw. Take it easy tool finder system - with profile and size colour-coding for quick and easy tool selection. Colour-coded system for hexagon drive screws L-Keys, Zyklop bit sockets, external hex drive screws and nuts Joker wrenches, Zyklop sockets and Zyklop bit sockets with holding function, and TORX drive screws L-Keys, Zyklop bit sockets.