Don't use crappy store brand staples...you will waste so many when they can't get through 15 sheets of paper and you have to pull it out and try again multiple times. I bought my own supply of these for work because I was so frustrated with the store brand staples my office was buying. These work so much better and save me time and frustration...I can just staple and move on. Yup, sounds silly, but if you heard me swearing 50 times a day at work and now not swearing you would know. These staples actually do what they are supposed to.