The Reptile One Dome Reflectors are designed to direct heat and light produced by a heat lamp towards an intended basking site.These reflectors are a high-quality metal dome reflector with an E27 screw type ceramic, heat resistant socket that will suit most reptile lamps including the range of Reptile One heat lamps.Specifications: Available in 3 sizes46545 – suit up to 50W E27 Screw fitting 15 cm46546 – suit up to 100W E27 Screw fitting 22 cm46547 – suit up to 150W E27 Screw fitting 26.5 cmFeatures & Benefits: Prevents reptiles from coming in contact with heat lamp elementReflective surface in the dome maximizes the heat lamps energy to a chosen heat zone