Stahlwille 7161 QuickRelease safety lock, size 3
Prevents insert tools being swapped. The system is locked in place on the head of the torque wrench by means of a safety screw. Once the protection system has been fitted, it is possible to attach an insert tool but not to remove it because the QuickRelease unlock button itself is locked. After the safety screw has been removed, the torque wrench reverts to being a standard, versatile tool. The safety screw can be fitted and removed using a Torx screwdriver with a central bore in the tip (No 4656, Size T20, Code 46 56 00 20) or a BITS screwdriver insert with a central bore in the tip (No 1442, Size T20, Code 08 16 00 20).