1.Size: M12 * L 2.Standard: DIN933, DIN84, DIN85, DIN963, DIN7991, DIN6912, DIN931,etc. 3)titanium grade: ... with different sizes: 1) Size: >M3 * L 2) Standard: DIN912, DIN933, DIN84, DIN85, DIN963, DIN7991, DIN6912, DIN931, ISO7380, ISO7380 , etc. 3 ...