The K&M 12450 Uni-Boy “Classic” in blue is a set of 12 durable, easy-to-use page holders designed to keep sheet music, books and manuals securely open on desks, tables or music stands. Lightweight and gentle on pages, they stop unwanted page turns during lessons, rehearsals or performances. Perfect for schools, ensembles and teaching environments, this practical blue 12-pack offers a long-lasting, reliable solution for maintaining clear and stable readability.