The Self-Locking Sluice Box is a 50″ x 9″ sluice box with a patented self-locking mechanism for maximum gold retention. It features 8 zinc plated steel riffles and expanded aluminum riffles for maximum gold separation. The deep V ribbed black rubber matting allows for easy gold identification. The box comes with 4 independent legs (2-16″ and 2-20″) with hole in each foot pad for anchoring. The accompanying stand is 46″ long and fits sluice boxes up to 12.75″ wide.