NSK FX57 4:1 Reduction Prophy Slowspeed Attachment Handpiece NSK FX57 4:1 Reduction Prophy Slow speed Attachment Handpiece shown -- Talk About Us -- Post navigationPrevious post: NSK FX57 4:1 Reduction Prophy Slowspeed Attachment Handpiece Leave a Reply Cancel replyYou must be logged in to post a comment. This site uses Akismet to reduce spam. Learn how your comment data is processed.