This set of Grade 5 Ti64 Titanium turnbuckles are made in the USA and is designed to fit the RRP-RMP / YMP013 mid motor buggy.  M3 tread.

This kit includes 9 turnbuckles (3x52.5 4x42.3 1x26.5 1x36.5).  
 
RPM Ball Cups here:  https://www.dragonpunchrc.com/product-page/rpm-heavy-4-3-duty-rod-end-ball-cup-set-16-pack

Generic picture for reference only.