differences in total numbers of tumbler pin stacks in number of pins within individual stacks e g some pin tumbler locks may include an additional u201c spacer u201d pin s situated between each driver pin and key pin and in the configurations of their locking mechanisms of course certain specifications of the instruments employed in the present invention may need to be varied accordingly fig1 illustrates a preferred embodiment of the lock releasing system of the present invention that preferred embodiment is a three piece system 2 comprising a key 20 a lift device 30 and a shim 10 that operate with the pin tumbler lock 60 the key 20 comprises a handle portion 22 and an insert portion 24 or blade the key blade 24 itself comprises a rectangularly elongated base 28 that has multiple teeth 26 projecting upward from it the number of teeth included on the key blade 24 can differ as any given system key 20 will properly operate with only locks that feature the same number of tumbler pin stacks as the number of teeth 26 along that key 20 so for example since the lock 60 shown in cross section in fig2 4 has four pin stacks a suitable system key 20 will feature four teeth 26 a d furthermore the height of the uniformly profiled.