Each package includes 6 pack baby proof stove locks that come with 1 year warranty. If you have any questions or concerns, please send us a message and we would gladly assist you. Please measure the stove knob gap before purchase, The clearance below the gas stove knob from the stove needs to be 0.17inch to 0.46inch within this range. No drill installation needed, simply slide the proof lock behind the knob to secure knob from turning. Child-proof stove knob protectors are built with heat-resistant plastic. The design is simple but built-tough to last with textured bumps for better grip and blends in with your appliance. Aukfa stove protectors are made to be both safe and easy to use. Just as easy it is to secure the knobs, it’s also just as easy to take off when it comes time to use the stove. These stove knob protectors will fit most. But there is no way for your child or pet to open it. Our upgraded Aukfa childproof stove knob Locks, Unlike all other stove knob Covers in the market,It can be used without unscrewing the knob Covers. Aukfa child-proof safety locks prevent babies from opening gas stove and getting accidental injuries when exploring the house.They are easy to use, put in or pull out.