Manufactured from AISI 420 German stainless steel. Product Conforms to ISO 9001, CE-Quality Mark, ISO 13485, FDA and other Quality Standards Highly polished finish for aesthetic and corrosion resistance High Degree of Precision and Flexibility while conducting the Clinical Procedure. Premium Quality Stainless Steel with Superior Craftsmanship. 5 Pcs Set Includes: 1.....Excavator 125/126, 2.5 mm Spoon for removal of carious dentin. 2.....Excavator 127/128, 2 mm Spoon for removal of carious dentin. 3.....Excavator 129/130, 1.8 mm Spoon for removal of carious dentin. 4.....Excavator 815-A, 1.2mm Spoon Ends for removal of carious dentin. 5.....Excavator 816-B, 1.4mm Spoon Ends for removal of carious dentin.