SIZE: Please measure your stove knob before purchasing, otherwise it cannot be used. The distance between the two nearest stove knobs must be greater than 13 cm (5.11); the height of the stove knob should be less than 5cm (1.96); the diameter of the pan knob should be less than 6.5cm (2.56"). SCIENTIFIC AND SAFETY DESIGN: parents can easily open the buckles, but it is difficult for parents children, it helps prevent accidents before they happen. WHY YOU NEED IT: Prevent children from opening the stove and hurting themselves (such as burning themselves or causing fire or poisoning), prevent children from pulling the throttle and losing them. It can also be used on oven knobs. MATERIAL: High temperature resistant PC+ABS material ensures product quality and durability. UNIVERSAL SIZE: Our products are applicable to most gas stove knobs. Features: Hard to open for children but easy for adults to open. High temperature resistant PC+ABS material ensures product quality and durability Convenient to install Applicable to various gas stove knobs Protector , durable, easy to use /p Specifications: Material: PC+ABS Type: Gas stove knob protector Size: one size (6.6x6. 6x4.4cm/2.59x2. Please allow 1-3cm error due to manual measurement. Make sure you don't mind before you bid. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!