Book Darts are precision-cut, paper-thin metal line markers that attach easily to any page. To use, place Book Dart at desired line, close book and press in. Sliding a Dart onto a passage assures you can recall it easily even in a closed book.
Contains a mixture of three metals. 75 Book Darts total.
These Darts have been tested on varieties of paper under accelerated heat and humidity conditions, and they have never imparted any stain to any page.