The ceramic material used in this product has the characteristics of high toughness, high temperature resistance, corrosion resistance, insulation, wear resistance and impact resistance. The smooth streamlined design effectively avoids the damage of the outer sheath inserted into the tissue caused by the withdrawal of the inner sheath, so that the surgeon has extraordinary control and tactility throughout the operation, and the operation is comfortable, smooth and smooth. Mainly used for endoscopic equipment in the medical equipment industry. Due to the thinner inner wall, zirconia with better toughness and impact resistance is generally used for material selection. There are two colors available: black and white.