This is a part to reduce the "rattling" of the front suspension on a Mini-Z 4x4. It was created as part of an improvement to address the issue of "becoming difficult to turn when under load." Compatible with Jimny, 4Runner, Wrangler, Defender, and Land Cruiser 300. There are no instructions, so please refer to the following videos: [Upper Arm Measures] youtu.be/SRDxeV40IYA [Rod End Measures] youtu.be/y6-qI-HEgYg [Assembly of Parts] youtu.be/Ez9KbFUR33g The parts can be installed directly, but due to the tight dimensional settings, some adjustments may be necessary. The product is made using a layered 3D printer. The material is PLA+, and the layer thickness is 0.1mm. Packaging will be "plastic bag + envelope". Thank you.