Model No. DEVIL SP1 Pump power: 7.8W Air intake: Max. 180L/H Pump type: skimmer use only Water Outlet: 12mm Optimized pinwheel impeller Venturi air intake unit Packing Box Size: 140mm (L) 140mm (W) 125mm (H) Products Feature: 1 it is exclusively designed for skimmer using. 2 Extraordinary powerfulMax up to 180L/H with 7.8W power consumption. 3 It is assembled with top quality material (shaft, magnetic rotor etc.). 4 Equipped with optimized pinwheel impeller and venturi air intake unit. 5 The direction of the water outlet, venturi air intake and pump location can be adjustable. The standard Devil pinwheel SP1 pump is suitable 1 For MS skimmer of pump outside model with SP pump Such as NANO-150, RDC-250 / NANO-250 2 For upgrading the skimmer pump.water outlet: 12mm 3 for the hobbyist to DIY their skimmer. Recommended skimmer cylinder body Diameter is: 60~90mm Packing: More picture Model No. DEVIL SP2 Pump power: 13W Air intake: Max. 400L/H Pump type: skimmer use only Water Outlet: 20mm Inside/outside water double use Optimized pinwheel impeller Venturi air intake unit Packing Box Size: 165mm (L) 165mm (W) 140mm (H) Products Feature: 1 it is exclusively designed for skimmer using. 2 Silent, Long lasting and lower power consumption 3 Double use for inside /outside the water. 4 It is assembled with top quality material (shaft, magnetic rotor etc.). 5 Equipped with optimized pinwheel impeller and venturi air intake unit. The standard Devil pinwheel SP2 pump is suitable 1 For MS skimmer of pump outside model with SP2 pump Such as SDP-750 & SDC-750 2 For upgrading the skimmer pump.water outlet: 20mm 3 for the hobbyist to DIY their skimmer. Recommended skimmer cylinder body Diameter is: 100~130mm