HERE'S A NEW RUBBER IMPELLER FOR MARINE UTILITY PUMP AND SOME POOL PUMPS ETC. It fits in a Harbor Freight model 9576 12 volt pump, as well as some other brand 110v and 12 v pumps. Although these pumps are reccommended on for water, i use these pumps and impellers for pumping hundreds of gallons of WVO and the impellers hold up fairly well as long as the stuff being pumped is pretty clean. Dimensions are about 1 3/8 inches in diameterHERE IS A  COPY OF THE OPERATING MANUAL & INSTRUCTIONS FOR KLUGE MODEL D SERIES  LETTERERPRESS