These are Eames Aluminum Group armless desk or side chairs, originally designed by Ray and Charles Eames in 1958. These particular examples were produced by Herman Miller in the USA in 2003. The design features a lightweight aluminum frame with a 5-star antler base, and seats upholstered in black naugahyde. The bases swivel, but do not tilt. The listed price includes one chair and there are five available to purchase. Each chair measures 21.25 inches deep, 19.5 inches wide, and 33 inches high with a seat height of 18.5 inches. The chairs show some wear from previous use, but overall are in very good to excellent condition. Please see photos.