Baby and pets safety proofing: Owning this child proof door knob locks helps you isolate many unexpected dangers and provide more security. Made of food-grade contact materials, no gas release. It's definitely a must have for families. design:The shape is ideal for most home stoves. Compared with other similar stove knob safety covers, our child proof knobs fit perfectly into the of the knob and more sturdy , giving a strong grip on the knob and not easy to fall off. Besides, the gaps left in the inner corners protect the knobs from damage after repeated use. Easy to use: Don't need any tool, and even without adhesive; you can install the stove knob cover in and easy to opertate. Heat- & High Quality: Our safety knobs for gas stove adopt high temperature Silicone composite materials, When using the oven, the oven lock 't be by high temperatures or chemical detergents, and can be used as often as possible. Application restrictions: Before purchasing, Please gurantee the range under your gas stove knob is between 0.16-0.47inch, which allows for flexibility to accommodate different stove models! This lock works for pets and very young toddlers. But it may not suit very agile, clever kids or those aged two and up. Color: Black Material: Silicone Package Contents: 5 x Stove Knob Locks Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.