The measurements written are in inches when the bangle is opened straight. Pls check your existing bangle diameter to the length before purchase.We do a good polish but these will get tarnished and become antique and get patinated because this is pure COPPER. Dark marks can be visible when these reach you.Solder marks will be visible as these are handmade pieces.Healing bangles.Copper has healing properties.Pure copper gets tarnished and oxidized eventually while coming in contact with the atmospheres air. Just clean it from a cotton cloth and it will go away.Wearing copper has various health benefits and spiritual benefits.It reduces stress, slows down ageing process, boosts immunity, improves heart health, helps in mental and spiritual vibrations, assists in wealth creation, protects us from negativity, and boosts our self-confidence.Copper works as antioxidant, relieves us from inflammation.Copper controls high blood pressure and helps eliminating arthritisCopper helps us in becoming magnets for spiritual good vibrations and positive energy.Copper is also associated with fertility.A piece of copper should be worn on our body at any given time.