... :1) use 6063# streched aluminium with thermal coefficient of 201w/m.k2)wind wide thermal sink and aluminium plate3)good heat ... ,RGB,etcBeam Angle: 120D Work temperature:<40 degree Base:GU5.3 Shield: Aluminium shield, lens Dimension:D50*H67MM Lifetime: Over 50 ... COB SPOT LIGHT at our website as following: MR16-3-3W-M, MR16-3-5W-MQuality warrantyQuality guarantee is based on storing, installing ...