Material: Titanium / Stainless Steel Reference Number Dia. Φ mm No. of Holes AMS 246.045.004T/S 4.5 4 AMS 246.045.005T/S 4.5 5 AMS 246.045.006T/S 4.5 6 AMS 246.045.007T/S 4.5 7 AMS 246.045.008T/S 4.5 8 AMS 246.045.009T/S 4.5 9