Eemann Tech Competition Springs Kit ET-131205 for CZ contains: • ET-131141 Eemann Tech Recoil Spring for CZ 11lbs – 1pc. • ET-131119 Eemann Tech Main Spring for CZ 9 lbs – 1pc. • ET-131109 Eemann Tech Competition Trigger Spring for CZ 75 – 1pc. • ET-131156 Eemann Tech Competition Firing Pin Spring for CZ – 1pc. • ET-131113 Eemann Tech Competition Sear Spring for CZ 75 – 1pc. • ET-131200 Eemann Tech Competition Magazine Catch Release Spring ( -10% power ) for CZ – 1pc. • ET-131201 Eemann Tech Competition Trigger Bar Spring ( -15% power ) for CZ – 1pc. • ET-131152 Eemann Tech Extractor Spring for CZ 75 – 1pc.