Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: maximum wattage it can use
Document: A well made unit that is able to use a variety of photo CFL bulbs in each of the outlets. The rear of the unit (not shown in the photos) features a single male screw in that fits well into most photo-umbrella stand adapters without the need for additional hardware. The socket adapter appears to be made or durable plastic and is not likely to crack easily unless abused or exposed to high wattage lamps for long periods of time (heat).
For low wattage, light weight compact fluorescents the fixture is adequate. But handle delicately and maybe avoid heavy LED lamps.
The bulbs feel flimsy when I tried to screw them inFeels risky to plug it in so use with caution
I used this to adapt a one socket 500W Photoflood light into a 4 socket Compact Flourescent Light system. Easy to install and use. Does the job!
I also don't need to use my speedlite with this like I did with the stock continuous lighting kit. This much light does give off a good deal of heat, but it's tolerable.
Bought this initially for the garage where it's dark, and I was blown away by the brightness. Probably going to use this for attic work because it's not really practical for daily use unless you are in need of lighting up a cave/hidden city.
I really needed light in my garage, which doubles as a shop. I installed one of these in each bulb receptacle and I now have plenty of light. I use 4 cfl's in each so I don't overload the original bulb receptacle with heat. I love all the light now!
This little gadget gives you one more option to use when you are short of light, and it does it in a no frills and inexpensive way. It is no more complicated than it looks.It does have certain limits, but these are imposed by the lamp you screw it into and by the type and size or bulb you choose to use. Depending on the physical size of the bulb, you might get three or four in.
This lovely invention allows you to use four bulbs in one standard light fixture. Be sure to check it from time to time to make certain that it is seated properly, as it can work loose if the lamp is moved frequently. Great for building an array of photographic lights, or creating a daylight simulating lamp.
Although packaged well and showing no sign of shipping damage, one of the sockets was not attached to the base because the screw was either too short had been overtightened and stripped its hole. It is not easy to disassemble the socket to replace the screw but I was able to use methacrylate plastic cement to re-attach the socket but this was extra trouble I had not expected.
Answer: I don't know for sure. But I have used it with 4x 85w CFL bulbs with no problems. Hope that helps.