... 20 years experience 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 ... competitive industry is machined hardware fastener ,especially the cutting/turning parts. 12L14 end core with nickel plated