Reduced Effort Device that automatic switches from double action into single action over 400 mBar in order to reduce the effort at higher pressure.• Less force more pressure• Anti-sand cover gasket• Alloy shaft• Capacity 2000cc• Max pressure 800mBar/11,6PSI• Includes universal adaptor set• Suitable for any type of inflatable boat• Dimensions 11cm x 22cm x 47cm• Functions inflate and deflate