Fangrui Product Details High Quality Material: Gas Stove Knobs Made Of High Quality Metal, Highly Abrasion , Robust And . Cooker Knobs Shaft Diameter:built-in 6mm Hole For Easy Installation, Smooth Easy To Clean. Cooker Knobs Design: Small Size And Light Weight, Modern, Concise And Elegant Design. Multipurpose:a Good Accessory For The Home Kitchen, Device For The Family Or Restaurant Kitchen, Widely Used For The Kitchen Stove, Gas Stove, Oven, Etc. Note: Make Sure The Cooker Knobs Is Compatible With Your Cooker Size (6mm) Before Purchasing It.according To Customer Comment, Our Knobs Is Not Recommended To Use Kitchen Appliances That Are Directly Used On The 220v Power Supply. Colour: Silver Material: Metal Size: 39 X 8mm Package Contents: 6 X Gas Stove 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.