I bought nails stayer 30 mm, the beginning and the end of the hat is thick, if it bites first, the length of the cassette is shorter than the plate, you have to share it. I recommend to buy, the option is budgetary but there are many benefits. I took a rental, I liked it, I took myself the same one. The fuss with the hammer and nails is now gone. Has pros: The speed of work increases significantly. Much easier to work with than with a hammer. Cons below: The fuse is large, it is inconvenient to work in the corners. The nails are not finished by 30 (linden lining thickness is 15 mm.), it is necessary to press the gun hard, respectively, there are traces of impact; And this despite the fact that the impact force is at maximum.