These Shooter's Packs are a great upgrade for popular revolvers. Replacement springs improve trigger function for better shooting performance. This pak contains 1 each 9 pound reduced power hammer spring and 1 each 6.5 and 9 pound reduced power trigger return springs allowing adjustment for lighter and smoother trigger and hammer action. Notes Not suitable for use with Taurus 94 or 941 revolvers. Due to changes in newer revolvers, Wolff trigger springs may require some modification.