Astra A-70 9mm Titanium Firing Pin made from Grade 6 Titanium which has an Ultimate Tensile Strength of 130 to 150 KSI. These are brand new and designed to fit the Astra A70 9mm. Titanium is 40% lighter than your standard grade of steels thus giving you a faster lock time. Titanium is also Corrosion- and high-temperature resistant to help eliminate galling, fretting, and seizing. All Pins are shipped with material certification sheet. Pin Specs: Length 2.122, Nose Dia. 0.059. MADE IN THE USA!!!!