This item is a must-have for setting-up Racing Bros and Doppler suspension units. The air volume is more finely tuned than the Doppler pumps. This pump is also for Doppler shocks. It can, of course, be used as a “normal” pump. Kitted with analogue dial and flexible pump hose, this pump can be used for any shock. A significantly more cost-effective alternative to overpriced items from other manufacturers.