Feels strong, meets THWAP requirements when used. However, it's a bit cheesy and considerably weaker than my hand stapler (which is cheap, off-brand, but decent). Bought when I was having trouble rebuilding a motorcycle seat using a cheap hand stapler, the old staples didn't go through the vinyl into the pan at all. Got this gun and new restraints and was very disappointed. The illustration shows the penetration into the motorcycle seat shell with a 10 mm pointed bar (another bar for sizeโฆ