OSRAM575W 115V HPL Long Life 3065k G9.5 Halogen Light Bulb

Works as expected and the price is great compared to what we used to pay for OEM.

I purchased 8 of these bulbs for our church flood lights, which are very high in our sanctuary, and we have to rent a lift to change them, so it was impractical to check the sockets before purchase. I have no idea how to rate this bulb, since the built-in heat sink prevented me from installing it. Just be sure that it will fit your socket before you purchase this. As you can see, the heat sink is at the very bottom of the bulb. I really can't imagine what kind of socket it would fit. I returned all my bulbs, but had to pay return shipping, plus a 15% restocking fee.

Lamps work well and they arrived quickly.

The sockets on these bulbs will fit an ETC source four par stage light, we have them in our 750watt fixtures even though they 575watt, so the fixtures aren't working at full load.