Officemate Prong Paper Fasteners, 3 inch Capacity, 8.5 inch Base,  Box of 50 Complete Sets,  (99856)
Complete two-piece fastener includes prong base and compressor. Ideal for use in file folders that need to be modified or added to frequently. Locking compressors slide over base prongs to keep papers tightly compressed to save valuable filing and storage space. Both bases and compressors are made of brightly finished, corrosion-resistant steel.