Acco prong fastener compressor, fits 2-3/4″ c-c prongs, 100/box file fastener compressors are designed for use with acco 2-3/4″ c-c prongs for binding correspondence, orders and all other classes of papers. Compressors are made of heavy-gauge material for superior strength and durability. larger quantity quotes available. Please call 1-888-978-7759. this product arrives to most customers in 2-3 business days.