Basic round-ring binder features two triggers on the ring mechanism that provide easy access to your documents. Back-mounted metal rings allow pages to lie flat. 1-1/2" capacity holds up to 350 letter-size sheets. Clear pockets on the inside covers offer extra document storage with a 30-sheet capacity for each pocket. Design also features a sturdy chipboard core and exposed rivets. Three-ring binder is made of polypropylene. Business Source Basic Round Ring Binders - 1 1/2" (38.10 mm) Binder Capacity - Letter - 8 1/2" (215.90 mm) x 11" (279.40 mm) Sheet Size - 350 Sheet Capacity - 3 Ring - Fastener: Round Ring - Polypropylene, Chipboard - Red - 1.02 lb (462.66 g) - No - Exposed Rivet, Sturdy - 1 Each General Information Manufacturer: Business SourceManufacturer Part Number: 28553Brand Name: Business SourceProduct Name: Basic Round Ring BindersMarketing Information: Basic round-ring binder features two triggers on the ring mechanism that provide easy access to your documents. Back-mounted metal rings allow pages to lie flat. 1-1/2" capacity holds up to 350 letter-size sheets. Clear pockets on the inside covers offer extra document storage with a 30-sheet capacity for each pocket. Design also features a sturdy chipboard core and exposed rivets. Three-ring binder is made of polypropylene. Packaged Quantity: 1 EachProduct Type: Reference Binder Product Information Binder Capacity: 1 1/2" (38.10 mm)Sheet Capacity: 350Sheet Standard: LetterSheet Size: 8 1/2" (215.90 mm) Width x 11" (279.40 mm) LengthNumber of Rings: 3Fastener Type: Round RingPocket Location: InternalFeatures: Exposed Rivet Sturdy Physical Characteristics Color: RedMaterial: Polypropylene Chipboard Weight (Approximate): 1.02 lb (462.66 g) Miscellaneous Recycled: NoAssembly Required: NoCountry of Origin: Mexico Product Numbers: 035255285537