INTERMEDIATE DELUXE – Bump Key Set 20 KEYS with ebook


This set meant for professional locksmiths. Offering great coverage of the most popular Residential, Commercial  and High Security door, deadbolt and padlock keyways!

SKU: Intermediate Deluxe Category: Tags: , , , , , ,


The Intermediate Deluxe 20 bump key set for even better coverage of common lock sets!

This Intermediate Deluxe 20 bump key set is meant for locksmiths, commercial property owners or business owners with high security and commercial locks. We have combined our Beginner 5 key set to cover popular standard security door, deadbolt and padlocks, our Commercial 6 key set for more industrial door and deadbolt locks, and our High Security 7 key set for secure door, deadbolt and padlock keyways. Also we have added the Schlage (SC19) and the American (AM3) bump keys which are two more commonly found commercial and high security keyways.

This is a great broad coverage bump key set perfect for locksmiths who want to be able to tackle most everyday jobs with one set of tools.

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.


  • Schlage SC1 – 5 Pin
  • Schlage  SC4 – 6 Pin
  • Kwikset KW1 – 5 Pin
  • Kwikset KW10 – 6 Pin
  • Masterlock M1 – 4 Pin
  • Masterlock M10 – 5 Pin
  • Arrow AR1 – 5 Pin
  • Arrow AR4 – 6 Pin
  • Dexter DE6 – 5 Pin
  • Weiser WR5 – 5 Pin
  • Yale Y1 – 5 Pin
  • Best BE2 – 7 Pin
  • Ilco IN33 – 5 Pin
  • Master M11 – 5 Pin
  • National NA12 – 5 Pin
  • Sargent S22 – 6 Pin
  • Weslock WK2 – 5 Pin
  • Schlage SC20 – 6 Pin
  • Schlage SC19 – 5 Pin
  • American AM3 – 5 Pin
  • Set of 5 Speed Bump Rings
  • Bump School Keychain
  • Free E-Book

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.



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