This stapler should be called “Mighty Max”, For it is built like a Mack truck very sturdy heavily constructed and well-built I expect this to outlast my standard stapler in the office. I bought this to replace an old number 10 mini stapler and was surprised at the heft of this tool. The use of number 10 staples over the US standard staple saves so much space in the files Plus they penetrate 10 sheets of paper so much easier than the heavy standard staple. I would recommend this to anyone who is serious about filing and storing papers.