Ring binder mechanisms are ideal for loose leaf files, folders, portfolios and a wide array of other filing products. They are easy to open by hand or a booster. Ring binder mechanisms are available in a variety of shapes, including a round R shape, D-shape, and STD shape for customers to choose from according to their file binding needs. Specifications meet international standards, though custom options are available upon request.
Surface treatment: electroplating, electrophoresis, dusting（silver, black, bronze, rose gold and custom colors)
Customization options: ring shape (R, D, Q, and SD), size, surface treatment, and design
With the trigger binder mechanism, rings are opened and closed with a booster, the type of the booster can be trapezoid booster and inclined booster. The binder mechanism are available with different shapes as round R-shape rings, D-shape rings, inclined D-Shape.
Easy to flip 
