Come and see our amazing products. When you need to open the door, Stretches over door knob, press the buttons and turn the door knob easily, Slips on quickly with no tools required. No drill and tools need, no harm to the door. Made of alloy, practical and durable. Baby safty door knob cover for Parents can use them safely on the door knobs. It is small in size, which is convenient and fast. The price includes the shipping cost to CA. Pls confirm with us about the packing info, stock color and exact production time before placing your order