... 1,Name: 12L14 end core with nickel plated;End core with nickle plated;12L14 end core2,For the similar end core,what can we ... do ?(1), Ability for the material of this kind of end core : Grade3.6,4.6,4.8,5.6,6 ... ,8.8,9.8,10.9,12.9,etcCarbon steelGr.B,Gr.C,Gr.D,Gr.36,Gr.58,1010,1015 ... is machined hardware fastener ,especially the cutting/turning parts. 12L14 end core with nickel plated