A set of six bump keys for the Q one star cylinders. These locks contain a zero cut in one of the 6 pin positions. We have added a zero lift finder to help you identify the dead spot which narrows down the keys you should try. These have now been thoroughly tested and work brilliant on the new NELK  BSi one star cylinders. Static bumping works particularly well on these locks, we have also had success on TSS one star cylinders and UAP+. It will work on any lock that shares the same spacings and has a zero cut.