As Hawkston 's stapler became useless, I replaced it with a reliable Max made. As expected there are only specialized manufacturers and there is no particular dissatisfaction, but due to having power to be bound up to 40 sheets, when binding a small number, the impact transmitted to the hand is somewhat large. The price is slightly higher, but I hope arbitrarily that I can use it for the rest of my life. Just a piece of important moving part is using light plastic, and the durability of that part is somewhat concerned. The old one was made of all metal so it was already sturdy.