Endodontic K-Flex Type Files 25mm #15-40 Assorted 6/Box. Stainless Steel.Endodontic K Files 25mm #15-40 Assorted 6/Box, Stainless Steel. $8.72 Regular Price$5.25Sale PriceQuantityAdd to CartNo Reviews YetShare your thoughts. Be the first to leave a review.Leave a Review