This adapter allows you to use a Edison Screw Light Bulb in a Bayonet Lamp Socket. 1. Worked as expectedfit Hue light bulbs well 2. product is simply an adapter for assisting with fitting of another product. 3. The E27 bulbs fit nice and tight with little movement and the bayonet fitting connected cleanly into the existing light fitting and all working perfectly. 4. Easy to install just as you would a light bulb nice tight fit not to loose. 5. Nicely made and useful adaptor to have. 6. These are great to make use of those bulbs that have a screw fit and you want to pop them into a bayonet fixing. Product Dimensions: 65 x 27 mm Voltage: 220 volts Material: Plastic Special Features: switch adaptor Package included: 10 pcs x B22 to E27 Bulb Adapter Note: 1.There is 2-3% difference according to manual measurement.(1 inch = 2.54 cm) 2.Slight color difference should be acceptable due to the light and screen.