Features:E27 to E40 adapter converter, enlarge the light bulb socket, quick and easily convert E27 medium screw socket to E40 socket.Made of high-quality thermoplastic polymer (PBT) fireproof plastic and aluminium material, with solid construction, no fire hazard, high temperature heat resistantCompact size and light weight, widely fit for E27 socket lighting fixtures and E40 base LED/halogen/CFL light bulbs.Easy to install and plug and play, no tools needed, save you a lot of trouble and money of replacing your original lighting fixtures.Suitable for home and office lighting, shopping mall lighting, display case lighting, art lighting, light boxes, board lighting, commercial lighting, industrial lighting.Specifications:Material: PBT+MetalColor: whiteHeat-resistant temperature: 120Rate Voltage: 220~230VSize: (Approx) 8 x 4.5 inch/3.2 x 1.8 cmPackage Included:1 PC x E27 to E40 AdapterNote:1. Due to the light and screen difference, the item& 039;s color may be slightly different from the pictures.2. Please allow 0.5-2 cm differences due to manual measurement.