Plastic construction resists corrosion and wear for long-lasting use
3/4 inch outer diameter fits standard binder and Thuls systems for versatile compatibility
9/16 inch inner diameter allows easy insertion of punched cards and sheet protectors
Lightweight design at 1 oz minimizes added weight to gear
Securely holds cards and sheet protectors without the need for metal rings
Summarized by Shop
These plastic binder rings are great for keeping your THULS reference system together and organized even in the harshest conditions. Want to link any punched style cards without a hard metal ring binder? This is your solution.
Designed Compatibility