Buying a box of 10 Standard Halogen GU10 light bulbs is a cost effective practical way to purchase these hugely popular light bulbs. These 50 Watt Par16 reflector/spotlights feature a 25 degree beam angle for even light distribution. These lamps are a high intensity light source commonly found in many domestic retail and commercial downlighting applications. These mains voltage GU10 lamps offer an average lamp life of 2500 hours.