The unit is well designed and constructed. But the foam mode was of no use to me. I wanted to apply foam to structural framing by cutting small holes in drywall. The foam only oozes out so this didn't work. If there is some way to shoot foam a couple feet, I found no directions for how to accomplish this.
Instead I just used the sprayer. But all the spray nozzles shoot straight ahead so I had to rig up a ninety degree turn with tubing, stiff wire, and duct tape. This worked fine using the red spray head supplied.
What would be best would be to include or buy somewhere a 1/4" dia. or less spray nozzle that shoots at 90 degrees. This would enable drilling only small holes which are easier to patch than larger cutouts.
As someone else stated here, it was shown with a metal pump handle and proffesional grade, but has plastic handle and pump shaft. The sprayer does work great for creating foam but you have to shake shake shake and keep your pressure built up. I took on too big a job for this sprayer but it did the job great. I foamed 33 linear feet of brick "between brick and inner wall by drilling and foaming every 18 inches or so. Not for the faint of heart or weak in the back or arm. I locked the sprayer wand in spray mode and shook, pumped, shook and pumped. It will do the job but takes quite a bit of work for bigger jobs. I would say this is an excellent product for foaming small applications or say a few spots on interior walls were termites are active. Not intended for the task I put it through although it preformed and completed it, I was a tremendous amount of pumping and shaking.