ULTIMATE – Bump Key Set 37 keys with ebook


SKU: Ultimate Category:


The Ultimate Bump Key Set for industry professionals.

This is the Ultimate collection of bump keys. It includes almost every bump key for home, commercial, high security, and padlocks. This set includes keys purpose selected for lock smith professionals, rental/commercial property owners and very serious hobbyists. If you’re looking for a lock bump key set that covers almost every lock set under the sun, then this set is for you. We have included a huge selection of Master Lock bump keys so you’re covered for any Master Lock padlock. We have also included 6 Yale bump keys for commercial doors and high security lockers and cabinets. Less common lock sets like American, Best, Ilco, Russwin, Sargent and Weslock are covered in this set as well. With this set common household, commercial, padlock, high security, and specialty lock sets are a breeze to open. A practiced lock smith open a huge selection of lock sets faster and with no damage to the lock making the 37 Key Ultimate Set a no brainer for any lock smithing or security professional.


These bump keys have been precision milled specifically for lock bumping. Made from quality key blanks they are durable and long lasting. They will not inflict any wear or damage on the target lock sets.

Also Included in this set is a FREE Bump Hammer Specially designed and manufactured by BumpSchool101 for lock bumping.

This Ultimate Bump Key Set Includes:

  • American AM3
  • American AM7
  • Arrow AR1
  • Arrow AR4
  • Best A (BE2)
  • Dexter DE6
  • Ilco IN3
  • Ilco IN33
  • Kwikset KW1
  • Kwikset Titan KW10
  • Masterlock M1
  • Masterlock M10
  • Masterlock M11
  • Masterlock M13
  • Masterlock M16
  • Masterlock M19
  • Masterlock M4
  • Masterlock M5
  • National NA12
  • National NA14
  • National NA6
  • Russwin RU46
  • Sargent S22
  • Schlage SC1
  • Schlage SC19
  • Schlage SC20
  • Schlage SC4
  • Segal SE1
  • Weiser WR3
  • Weiser WR5
  • Weslock WK2
  • Yale Y1
  • Yale Y11
  • Yale Y12
  • Yale Y13
  • Yale Y2
  • Yale Y4

Visit the Bump School 101 Blog for additional information about lock bumping.

We also offer many other bump key sets and tools here at our SHOP, including these popular sets!


Wikipedia Definition:

Lock bumping is a lock picking technique for opening a pin tumbler lock using a specially crafted bump key,rapping key or a 999 key. A bump key must correspond to the target lock in order to function correctly.

A pin tumbler lock is composed of a series of spring-loaded stacks called pin stacks. Each pin stack is composed of two pins that are stacked on top of each other: the key pin, which touches the key when it is inserted, and the driver pin, which is spring driven. When the different length key pins are aligned at their tops by the insertion of the correspondingly cut key at their bases, the tops of the key pins and, consequently, the bases of the driver pins, form a shear line, so that the cylinder can be turned, rotating the key pins away from the driver pins. When no key or the wrong key is in the lock, pin misalignment prevents the cylinder from turning.

When bumping a lock, the key is initially inserted into the key way one notch (pin) short of full insertion. Bumping the key inward forces it deeper into the key way. The specially designed teeth of the bump key transmit a slight impact force to all of the bottom pins in the lock. The key pins transmit this force to the driver pins; the key pins stay in place. This physics action can be visualized by observing the same effect on the desktop toy: Newton’s cradle. Because the pin movements are highly elastic, the driver pins “jump” from the key pins for a fraction of a second, moving higher than the cylinder (shear line of the tumbler), then are pushed normally back by the spring to sit against the key pins once again. Even though this separation only lasts a split second, if a light rotational force is continuously applied to the key during the slight impact, the cylinder will turn during the short separation time of the key and driver pins, and the lock can be opened while the driver pins are elevated above the key way.

Lock bumping takes only an instant to open the lock. The lock is not visibly damaged, although the force of the bump can leave an indentation on the front of the cylinder. Certain clicking and vibrating tools designed for bumping can also be used. These allow for rapid repetition of bumping against locks that have advertised “bump proof” features. Only a rare few key-pin locks cannot be bumped.


Additional information

Weight 1 lbs


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