BCY’s new B55 is a durable, high-performance polyester string material. (Polyester is the kind of material the old slower “Dacron” was made from.) This new low-stretch polyester is faster than ever but still safe to use on any bow new or old. For anyone shooting vintage Fred Bear bows, this is the perfect string to get the best performance without any chance of harming the bow. Each ¼# spool holds approximately 1100 feet. Available in: Black, White, Red, Green, Tan, OD Green, Yellow, Brown and Blue.