Profile: The Walter Machine Co., Inc. produces industrial gear drives, keel coolers, shaft couplings, propeller pullers and V-drives. Our V-drives are precision gear drives which allow inboard engines to be placed in the stern of a boat for greater safety and better handling. This V-drive enables the propeller to be tucked under the hull in front of the rudder. Our keel coolers are available in 3 models & variety of sizes to suit every application from 10 horsepower auxiliary engines to 5,000 plus horsepower propulsion engines.