While bumping doesn't work all the time, it's amazing how often it does work. The bump keys we offer are cut to exact specifications and come in the most common keyways you may encounter. Included in the basic set are the KW1, SC1, Y1, WR5, M1, and M10. These keys should allow access to the following residential locks: Kwikset (NOT Smartkey), Schlage, Yale, Weiser, and Master padlocks.