Skull Neon Sign - Interchangeable glass without base. The glass is for Locomocean neon signs with a concrete base. Concrete base and electric cables are not included in the set. You can purchase the neon sign kit with the base separately. Fun and unique lighting that gives the interior a true retro neon glow. The top is interchangeable so you can try different designs. The sign is handmade, safe, durable, does not heat up.