HOYT F7 FORMULA LIMBSThe fastest Formula Series limb ever engineered. The all new F7 uses innovative Triaxial Carbon Technology- developed for demanding aerospace applications. F7 features enhanced recovery rates, optimal torsional stability and all-temperature performance, with the lowest total mass weight of any Hoyt recurve limb ever made. The use of triaxial and unidirectional quad carbon layers and a choice of either Hoyt's legendary Syntactic Foam Core Technology or traditional laminated hard rock maple cores result in more speed, decreased sound and vibration, and an astounding 1,000-dry-fire capability, for ultimate durability. F7 is the new podium leader. (Available in 22 to 50 lbs. in 2 lb. increments, short, medium and long lengths.) (All dry-fire testing is done by trained technicians with proper equipment. Dry firing (drawing and releasing a bow without an arrow) is extremely dangerous and should never be done. Hoyt's 1,000 dry fire test and standard is for Hoyt limbs only.