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The Delavan 90200 1-3/8″ Roller Pump Coupler is a dual-speed coupler designed for use with 5/8″ shafts. Made by Delavan Ag Pumps, Inc. in the United States, this coupler is specifically designed for heavy equipment attachments such as sprayers. With its durable aluminum construction and innovative dual-speed design, this roller pump coupler is a reliable and efficient component for various industrial applications.