Pendant Surgical Steel Dimension from bail to bottom:.1.1/2 x 3/4.inches bar style matte finish. Surgical Steel is a grade of stainless steel, more specifically it is called 316L. Surgical Steel Jewelry is perfect for everyday use as. it does not tarnish, corrode or lose its luster. Our surgical steel jewelry does not cause any type of skin irritation and allergies since it is the same steel used in body implants and it is perfect for an active lifestyle.