This adapter allows you to use a Edison Screw Light Bulb in a Bayonet Lamp Socket 1 Worked as expectedfit Philips 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 screenProducts from GuanGuan's store