The wera 967 sl9 holding function l key set with torx profiles is uniquely designed to securely grip the fastener without the use of magnetism in addition the holding function hf element securely holds screws thanks to a clamping effect achieved by a flexible locking ball the hf system is especially helpful in confined hard to reach spaces where there is no room for a second hand to hold the screw made from round bar with machined ends for a precision fit and extra strength the black laser surfa