Item Name : Child Stove Knob Cover Protection Locks Package Included : 8 Pack Stove Knob Covers+Detailed instruction manual Size : external diameter 2.61 height 1.62 - Please ensure your knob size before buying. Color : Clear Features: 8 PCS Stove Knob Covers help protect children from burns and scalds. They are heatproof, slot easily over most stove and oven knobs and are easily opened by an adult to allow for normal use.Simply pop open the covers hinged lid to access the knob when its time to cook. Easily confirm whether a stove burner is on or off with the stove safety knob covers clear, see-through lids. The covers are unique design for most gas and electric stoves and gas grills with small size knobs. Updated clear view design:Easily blends with home decor. Super easy to install:No drilling or any special tools needed. Steps for Usage: Step 1. Remove the cooker knob from the panel. Step 2. Open the product and attach the perforated parts to the position where the knob is removed Step 3. Reinstall the knob,close the protective cover,and install it. Step 4. When using the cooker,press the button to open the protective cover. Step 5. Close the protective cover after use. Warm Tips: They are not toys. Just fit for most stove covers, not for all stove knobs. Before purchase, please check and measure the size of your stove knob first.