• Durable 100% high-performance polyester string material • New low-stretch polyester is faster than ever, but still safe for use on any bow, new or old • Uniform diameter from beginning of the spool to the end of the spool • Specially formulated wax for better manipulation when making strings • Works extremely well on both recurve and long bows • Recommended strand count: 10 to 16 strands • Spool size: 250 meters (about 273 yards)