Heres a no frills kit that gives you exactly what you need to re-key cam locksnamely, Wafer Tumblers and Springs! Contains 400 regular tumblers and 400 springs for all of your re-keying needs. Used in re-keying 90% of the wafer cam locks in the market place, the CRK-30 features a portable, spill proof, durable vinyl case that fits in your shirt pocket. THESE ARE NOT FOR AUTOMOBILE WAFER LOCKS!