Design features Heavy duty motors with stainless steel shafts and tough thermoplastic bodies. Totally submersible and ignition protected To all existing safety standardsBIA, NMMA and ISO/EC regulations Water cooled motors for long life, with anti airlock design and moisture tight seals Snap-lock strainer base for easy installation and removal, and silent vibration free running No burn out if run dry Pump body: Thermoplastic Shaft seal: Lip seal Shaft: Stainless steel Voltage: 12 V DC/24V DC Model Delivery Volume Delivery Head Voltage Dc Current Cable Outlet Dia. AD350-12 350GPH 3m 12V/24V 1.8A/1A 100cm 19mm or 29mm AD500-12 500GPH 3m 12V/24V 2.2A/1.2A 100cm 19mm or 29mm AD750-12 750GPH 4m 12V/24V 2.5A/1.5A 100cm 19mm or 29mm AD1100-12 1100GPH 4m 12V/24V 3.0A/1.5A 100cm 29mm by seaworthy strong cartons