This is Vanquish Inicsion 1/4 Stainless Steel 8pcs Link Kit For Axial RR10 Bomber. For: Axial RR10 Bomber. Stainless Steel Tie Rod Links (1 pc). Rod Ends with Steel Hollow Balls (16 pcs). Stainless Steel Drag Link (1 pc).
I prefer these links over the higher grade titanium links for my specific application due to them being steel and having more weight low to the ground and for the price point you can't beat it.
No instructions but plenty of help online, YouTube etc...
Great addition to my Bomber, added weight down low helped lower CG, aiding stability. Not cheap but to me well worth the price.