Pitch 3:1, 32-hole pattern and 5/8 inch (15.9mm) diameter;
Max. binding letter size or below size paper (cut the over size part);
Perfect for internal reports and functional documents. Especially binding using with Rayson TD-1500B34, TD-1500B34R wire binding machine or any other 3:1 pitch punching machine can be bound with 5/8" wire spines;
Permanent binding keeps pages in place. Available in several diameters with Rayson.