Fastens papers and documents easily and securely. 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. Two-piece prong fasteners made from corrosion resistant steel. 3-1/2" capacity. Compressor holes are 8.5" center-to-center. 50 sets per box. Made in USA.