I picked difficult to use because the middle hole punch sticks constantly. I can only fit about 8 sheets in it without it getting stuck. It is very annoying and extremely hard to get unstuck...
The product states that it can punch up to 15 pages of 20 lb weight paper. I punched 2 pages of sheet protector-type sheets and it hardly went through the plastic. The punched pieces were still hanging on as they had not been punched all the way through. Would have returned it but haven't had time. May still if it isn't too late to do so. Guess you get what you pay for.