Excellent value, this easily punches holes in 20 sheets at a time as it claims, and makes light work with binding. Takes a minute to bind a 200 page book. The only thing I could fault it for is the motor that winds in the spirals goes quite quickly, so it can be a bit tricky to wind the spirals on, but even then it is still quite easy to use. I prefer to wind the spirals in by hand anyway.