Feature 1.Application: For everything that needs to be crushed. 2.Function: Mainly Use it to find out if ore/rocks contain gold or other precious minerals,After crushing, place material into gold pan then pan material and examine for gold traces. 3.Material: Cast from high-quality Iron, sturdy and durable, not rusty. Professional Miners Mortar and Pestle . 4.Size: Mortar Height : 5 inches. Pestle Height: 8.35 inches. Weight:7.95LB 5.Satisfaction Guarantee: If you're not 100% satisfied with your Products, simply return it for a full refund in 30 days, no questions asked money back guarantee. Premium Support & 12 Month's Warranty. .