This is kettle lid whistle knob, which is made of sturdy material, convenient for lasting use. It will make a loud whistle to ensuring that you can hear it from another room when the water boils. Suitable for most whistling kettles cover, which keep its practicality and popularity. Features -Color:Silver -Material:Stainless steel -Size:5.50X5.50X3.00cm/2.16X2.16X1.18in - Safe and convenient to use, not easy to break or deform, reusable and can be applied for longtime. - The texture is delicate, without burrs, comfortable hand feeling, whistling kettle lid knob is safe and reliable. - Easy and simple to install. With wide application, it is suitable for most kinds of kettles. - Kettle lid knob replacement: they will make a loud whistle to keep that you can hear it when the water boils. - Simple but practical, they are great kitchen gadgets for bringing much convenience to you. Package list: 4 x Kettle Lid Knobs