NSK QD-J B3 Coupling for the Aqua handpiece NSK QD-J B3 Coupling for the Aqua Handpiece shown in black -- Talk About Us -- Post navigationPrevious post: NSK QD-J B3 Coupling 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.