That one is a stanley bostitch, I got it from a place I used to work. They really do speed things up if youre not bothered about appearances, but I wouldn't use one on cladding. They can make a mess. That one is just a baby one, fires upto 50mm coiled shanked nails. It does make youre arm ache after a while. I used to use the daddy versions useing 75mm nails but they were suspended. You got quite a kick off them. Thats maybe why my elbows are goosed useing them for seventeen years. I believe the coiled nails are very pricey. Its lucky I have a couple of cases