Tornado M110 springs are crafted from the finest quality steel wire used in piano strings, granting increased durability and accuracy. With irregular pitch design, mechanical wear is significantly reduced, thus boosting the system's lifespan. Labeled for easy reference, the Tornado spring packaging accurately indicates the speeds achievable in airsoft replicas after correct installation. From M85 to M170, the Tornado M110 spring is an ideal choice for airsoft fans who want to achieve desired muzzle velocities, providing the perfect option for AEG replica tuning.