4-Inch Spine Width 3-Sided Insert Pocket D-Ring Binder, 2-Hole / 3-Hole / 4-Hole Available

4-Inch Spine Width 3-Sided Insert Pocket D-Ring Binder, 2-Hole / 3-Hole / 4-Hole Available. 3-Sided Insert Pockets: Transparent pockets on front, back, and spine for easy label replacement and file identification. Rust-Resistant Metal Rings: D-shaped nickel-plated rings ensure smooth operation and prevent paper from falling out. Large 4-Inch Capacity: Holds 200-300 A4 sheets with a 10.16cm wide spine for extensive document storage. Customizable Hole Configuration: Supports 2-hole, 3-hole, and 4-hole options to fit various loose-leaf refills. Durable Waterproof Material: Hard cover with laminated film is anti-pressure, anti-fold, waterproof, and dustproof. Custom Color and Logo: Exclusive colors and logos can be customized on the cover for corporate gifts. Customizable Cover Material: Options include laminated paperboard, PP, and PVC for varied durability and look. Versatile Application: Ideal for office, school, business meetings, and home document organization.