An economical alternative to premium fasteners, ACCO Economy Standard 2-Piece Paper Fasteners includes prong bases and compressors. For use at home or in the office, you can securely bind up to thick piles of paper with these low-cost fasteners. Insert flexible fastener prongs through standard two-hole punched compressor holes, flatten prongs and adjust compressor's sliding rails to lock into position. They are easily adjustable as pages are added or removed. ACCO combines quality, style and innovation to become your total resource for accounting and storage supplies.