Die-casting aluminum housing. Good heat conduction, Directly replace 10~20W traditional halogen lamp. No UV,No IR Radiation LED MR16 ... Spotlight 3x1W replace 10-20W Halogen lamp Model No.: S-MR16-3x1WFeatures :Adopt 3Pcs 1W ... housing. Good heat conduction,surface-nickelized treament. Directly replace 10~20W traditional halogen lamp. No UV,No IR Radiation,No mercury ...