Dreamturf Alluvial Washing Mat Gold Dredging Sluice Box Mat Gold Rush Grass King Green Grass Gold Mining Mining Gold Recovery Rush Carpet Gold Mat 3 star grass, 26mm thickness, size 1x16 meters/roll, weight 70kg/roll 4 star grass, 28mm thickness, size 1x15 meters/roll, weight 80kg/roll 5 star grass, 30mm thickness, size 1x15 meters/roll, weight 93kg/roll