gold dredger gold sluice box mat dreamturf fine gold mat Gold filter alluvial gold washing carpet, the size is 1x15 meters. gold dredger gold sluice box mat dreamturf fine gold mat Gold filter alluvial gold washing carpet, the thickness is 24mm or 26mm. gold dredger gold sluice box mat dreamturf fine gold mat Gold filter alluvial gold washing carpet, the weight is 77kg/roll