CX2-55 Extended Glass Fused Vacuum Sealed Socket, with the same interface size for full interchangeability with the original plug. The socket surface is gold-plated, offering a bright and shielded finish with clear threading and easy operation. The plug is color-coded on both sides to prevent incorrect insertion. The wall penetration thickness is extended to 12mm, eliminating the need for previous boring methods, and providing resistance to air pressure and impact.