Jaccard Commercial Manual Mechanical Meat Tenderizer 304 stainless steel construction. 544 stainless steel surgical knives with bi-directional sharpness for easy penetration. Patented stripper frame design provides for easy installation & cleaning of blade set. Patented "T Safety Lock" maintains alignment and prevents damage to column structure. Machine Dimensions: 16.73"L x 40"H (with handle) x 15.98"D.