Product information. MBI-Master Beauty Instruments is one of the most trusted brands in nails and beauty industry. Most outstanding precision-crafted with stainless steel, MBI instruments are made by Solingen Â finest, hot forged special surgical grade stainless steel. Warranty: Lifetime warranty against manufacturer™s defects. MBI is very proud of its products and confident that all instruments are manufactured with the utmost precision, high standards & quality. All of the cobalt & stainless steel instruments are surgical grade, therefore, they can be chemically sterilized and are autoclave able without fear of damage. MBI stands behind every instrument produced and distributed. How to Care: Must lubricate after sterilization and always keep distance from each other. After removing from sterilization solution make sure rinse as much you can and remove every single drop of chemical especially from joints & screw to avoid corrosion which helps products to be intact from damage.