These kits are based on Dragon Sd.Kfz.251 Ausf. D in 1/72 scale, and are called "Hybrid Kits" because they include Dragon's model plus 3D printed parts and metal gauge width poles. They all come with the engine, tracks and wheels printed in one single part and new tires.
The three variants are the Sd.Kfz.251/7 Ausf. D with If.18, Sd.Kfz.251/17 and Sd.Kfz.251 Ausf. D with Nebelwerfer