Keene Engineering has developed the perfect concentrator riffle so you can experience fine gold recovery never before achieved with a sluice box. This is a professional clean up tool constructed of quality parts that are built to last. The first Hungarian riffle molded into a rubber mat and built into a portable concentrator sluice measuring 112 cm long by 20 cm wide with built in header box, plumbed with an adjustable flow valve to meter water flow and separate spray nozzle for clean up. Included with adjustable brackets, two 20 litre buckets and a 12 Volt 1100 GPH pump. Capacity roughly 50 kg per hour. Operates for 8 hours on a typical automobile battery. Battery and gold pictured are not included.