It's a model suspension for a vehicle. It could be printed because of its size, but for that has to be modified a little bit, since some ofthe axis planes are not stablished correctly. It will be modified and change to 3D printing.
The original drawing comes from El ciri blog, so I wouldn't have any problem in sharing it for free. It´s a nice model to practice with a 3D software. If somebody wants the technical drawings, just send me an email.