20"x10.5" Jarvine RiffleThe 20" x 10. 5" Jarvine Riffle is a production grade screened fluid bed riffle built for maximum gold recovery in highbankers and dredges running higher volumes. Designed, tested, and proven by Paul Jarvis (Master High Banker Builder), this USA made riffle delivers outstanding fine gold retention while maintaining aggressive nugget capture during long, heavy runs. Its screened fluid bed design slows fine heavies beneath the riffle, allowing gold to
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