The basics The X-ACTO X2000 precision knife is the ultimate cutting tool for precision and accuracy.  The benefits The X2000 precision knife is sleek and comfortable to hold. Fits X-ACTO blades 10, 12, 13, 16 and 17. The uses Make even the most complex cuts and trims with confidence and ease--no matter how small and no matter how detailed. The bottom line If the job or project requires surgical precision and laser like accuracy, then the X2000 precision knife is the blade that you are looking for.