Commercial Bump Key Set 6 Keys

Hey Cort, We test all of our bump keys after cutting them, so all of the keys we ship are known to work in the keyway for which they are cut. Just like lock picking, effective lock bumping is indeed a skill that takes practice and requires technique. That said, once you get the hang of it, it's reasonably straightforward to reproduce. Unfortunately, it is difficult to say what might be preventing your lock from opening. Often times, however, it is one of four things: either the keys are not being offset enough (the key must be pulled out at least 1 pin to ensure force is properly applied to the pins), or not enough pressure is applied to the face of the key while bumping, the bump is being administered at an angle, or the impact of the bump is not strong enough to jar the pins sufficiently to create the shear line.