Threads : M2 M3 m4 m5 M6 M8 M10 M12 m14. 1/8" 5/32" 3/16" 1/4" 3/8" 1/2" 3/4" 1" Materials : Brass - BS 2872 CZ 112 Finish : Natural, Electro-Tin, Chrome or Nickel plated.