Phoenix DS Co2 Air JackThe Phoenix DS takes the performance of the Phoenix to the next level with its dual stage telescoping design. This upgraded model is perfect for vehicles needing a lower retracted height for easier access while still providing increased lifting height for rough terrains. With a retracted height of just 8. 5 inches, the Phoenix DS easily slides under vehicles with a flat tire or those stuck on uneven groundsituations where traditional jacks often fail.