Features: 1.Perfect 24 hour heat source for all reptiles. 2.The flat-faced design is more efficient and longer lasting than conical designs which build up excess heat internally ultimately carbonizing the element. 3.Light is more effective with the use of UVB Lamp. 4.These heating devices screw into a standard porcelain incandescent socket, giving off intense light. 5.Ideal for basking reptiles, more concentrating reflectors, halogen prominent hotspots. Specification: Features: Perfect 24 hour heat source for all reptiles. The flat-faced design is more efficient and longer lasting than conical designs which build up excess heat internally ultimately carbonizing the element. Light is more effective with the use of UVB Lamp. These heating devices screw into a standard porcelain incandescent socket, giving off intense light. Ideal for basking reptiles, more concentrating reflectors, halogen prominent hotspots. Specification: Material: Glass Color: Silver Base: E27 Watt: 25 / 50 / 75 / 100W Voltage: 220V Size (Dia.) x (L): 6.3*7.5cm / 2.5*3.0inch(Approx.) Package list: 1*Reptile halogen bulb Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures.