Original two-piece self-locking fasteners give you a secure book-like binding to help you save on document storage space. Sturdy fasteners in specialty sizes are great for non-standard applications. Made from heavy-gauge high-grade material for added durability. Complete—Prong base and compressor. Fastener Subtype: Two-Prong Set; Fastener Capacity [Nom]: 2 ; Fastener Sheet Capacity: 200 Sheets; Center To Center: 2.75 . This is a bundle order of 2 Boxes 50 per Box