Easy-to-use case opener for waterproof cases compatible for Breitling, Panerai as well as an end to remove Seiko and Casio watch cases. One end offers round pins made for screw-back watch cases and the other end offers a wide large flat base to open up even sided Breitling watch case backs. Plenty of leverage for stubborn case backs and ensures a tight non-slip grip. Easily adjustable lugs for case backs with notches. Made in the USA high quality solid stainless steel, opening 70mm which makes this the best overall Universal tool and a must have for any serious watchmakers.