Features: E27 to E40 adapter converter, enlarges the light bulb socket, quickly and easily converts E27 medium screw socket to E40 socket. Made of high-quality thermoplastic polymer (PBT) fireproof plastic and aluminum material, with solid construction, no fire hazard, high temperature resistant. Compact size and lightweight design, widely fits E27 socket lighting fixtures and E40 base LED, halogen, and CFL light bulbs. Easy to install and plug and play, no tools required, helping save time and effort without replacing existing lighting fixtures. Suitable for home and office lighting, shopping mall lighting, display case lighting, art lighting, light boxes, board lighting, commercial lighting, and industrial lighting. Specifications: Material: PBT + Metal Color: White Heat-resistant temperature: 120C Rated Voltage: 220230V Size: (Approx) 3.2 x 1.8 cm Package Included: 1 PC x E27 to E40 Adapter Note: 1. Due to differences in lighting and screen settings, the item's color may vary slightly from the images. 2. Please allow 0.52 cm variation due to manual measurement.