Great Planes GPMQ4485 34 pieces 1/4 oz weights this product is made by: Great Planes Great PlanesP.o. box9021 Champaign, IL 61826-9021 <a href="http://www.greatplanes.com/">http://www.greatplanes.com/</a> All warranties and guarantees, including missing items, are handled directly by the manufacturer of that item.