Replacement Parts - The light socket is made of durable metal with stable characteristics, stable electrical performance and long-term reliability.Features - Can be used with standard H4 bulb housings for expansion The lamp holder provides connections for the bulb contacts to operate the bulb and provides good resistance to abrasion and moisture. Mounts in universal light bulb socket for maximum power output.Dimensions - Wire size: 3 x 100mm/ 0.12" x 3.9" (D*L), Socket size: 27 x 21 x 23mm/ 1.06" x 0.83" x 0.9" (L*W*T)Installation - Easy to install and replace damaged outlets, no special tools required.BUYING NOTE - Please make sure the part will fit your vehicle before purchasing.H4 headlight connector.It can be used with any standard H4 bulb housing for expansion or replacement.You can also connect this socket connector to any 12V power source to create a new light socket.This ceramic connector is of higher quality than the usual plastic connectors, which can overheat and melt due to oversized bulbs and loose connections.