Model No. DEVIL SP1Pump power: 7.8WAir intake: Max. 180L/HPump type: skimmer use onlyWater Outlet: 12mmOptimized pinwheel impellerVenturi air intake unitPacking 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 suitable1 For MS skimmer of pump outside model with SP pump Such as NANO-150, RDC-250 / NANO-2502 For upgrading the skimmer pump.water outlet: 12mm3 for the hobbyist to DIY their skimmer. Recommended skimmer cylinder body Diameter is: 60~90mmPacking:More pictureModel No. DEVIL SP2Pump power: 13WAir intake: Max. 400L/HPump type: skimmer use onlyWater Outlet: 20mmInside/outside water double useOptimized pinwheel impellerVenturi air intake unitPacking 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 consumption3 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 suitable1 For MS skimmer of pump outside model with SP2 pump Such as SDP-750 & SDC-7502 For upgrading the skimmer pump.water outlet: 20mm3 for the hobbyist to DIY their skimmer. Recommended skimmer cylinder body Diameter is: 100~130mm