The Little Giant MD series features leak-proof, seal-less magnetic drives and are designed for in-line, non submersible use. Volute and magnet housing are glass-filled polypropylene for excellent chemical resistance. Impeller is glass-filled polypropylene and Ceramagnet in. A in. (Barium Ferrite). Shaft and thrust washers are Titanium for excellent wear and trouble-free service. Pumping heads are easily rotated, cleaned or serviced with no special tools required. Spindle shaft is supported at both ends to prevent impeller damage during start-up and stop of pump.