Bump keys sold by Red Team Tools are produced to our unique specification based around code-cutting each bitting position slightly deeper than the maximum factory depth.
Our keys do not yet have any material removed from their shoulder so, out of the box, they are ready for use with the original "pull" method of bumping, but they ready for the minimal-movement modification for use with the newer "push" method of bumping pioneered by TOOOL members in Holland decades ago.
We opt to not modify the shoulders of our keys before selling them so that customers may opt to retain these code-cut keys to serve as master templates for subsequent duplication.
All bump keys purchased from Red Team Tools have one of our Bump Key Bands included for free. Additional bags of Bump Key Bands are listed separately.