Intermediate Turnbuckle Assembly Traditional Design is made from 316 stainless steel.  The Machine Swage option uses a hydraulic unit to compress the hardware fitting onto the cable creating a mechanical bond.  This method is performed by an experienced technician and requires a job site take off to ensure cables are made to proper lengths.  Hayn Grip option is a compression style terminal that is intended to be installed at the job site.  Method only requires hand tools and a torque wrench.  Hayn Grip instructions can be found here.