The Pencil Grip, Inc. has expanded its offering to include hundreds of products which are continuing to set a standard of excellence in each industry they work in. They have gained name recognition and trust in the education, toy, therapy industries and more. The Pencil Grip The Classics Book Rings are the sure, fast method of keeping things together. These book rings are made with a smooth and tough steel coating that won't crack or chip. With an easy open and firm closure, these durable metal book rings can be used for a huge assortment of projects as well as conveniences around the home, office, and classroom. They measure 1 "in diameter and come in a pack of 50. The Pencil Grip Inc.'s line of The Classics school, office and art supplies integrates new unique ideas with traditional must haves.