A-MB45-AI Bushing, Machine 2" x 3" 10GaOne New Aftermarket Replacement Machine Bushing 2" ID x 3" OD, 10 Gauge This machine bushing (also called a machinery bushing or shaft bushing) is a universal flat ring spacer used throughout agricultural, industrial, and lawn and garden equipment. Machinery bushings reduce wear between moving parts, prevent marring of fine finishes, and serve as precise spacers for sprockets, pulleys, gears, and shafts on new or repaired equipment. Made of low carbon