YOGO Mango Pro [Ceramic Multi-Off]YOGO's Mango PRO Bits are professional grade e file bits that every nail tech needs to make their job easier! CERAMIC MULTI OFF is a ceramic removal bit for easy removal of soft and hard gels, as well as base gels! Mango PRO Bits do not produce vibrations or heat, and are made from dental ceramic. Warnings: Dental ceramics are incredibly durable, however exposure to UV can cause discoloration or weakening in the materials, which can lead to breakage.