Quite easy for you to use. Built in a hole for easily mounting, rotary switch. Great for you to replace the damaged one for your Gas Stove Cooker. For kitchen table gas stove, gas range or gas cooktop switch knob replacement Product Name : Gas Stove Range Knob; Fit for : Gas Stove/ Range/Cooktop Material : Stainless Steel and Plastic; Color : Silver Tone and Black Center Hole Size (Approx) : 8 x 6mm / 0.3 inch x 0.24 inch (L x W); Size : 42 x 28mm / 1.7 inch x 1.1 inch (D x H) Weight : 111g Package Included : 6 x Gas Stove Range Knobs Only the above package content, other products are not included. Note: Light 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.