Features 3-ring design, twist action, brass clip, and a locking mechanism that prevents the point from retracting while you write. Engravable. Comes in a clear case that measures 6-5/8″ x 1″ x 2-1/8″. Limited lifetime warranty. Product Features 3 Ring Design Twist Action Brass Clip Locking Mechanism Prevents Point from Retracting While Writing Engravable