This pair of 2G Brass Skeleton Key Ear Weights is handmade from casted Italian Brass. Its height is 65mm (2 & 9/16").  Each piece weighs about 18 grams each. Brass is a strong and durable material that can last for a while if taken care of with proper cleaning and storage. However, it should not be worn long-term as it may oxidize under extreme moisture conditions.