Our products are made of high-quality stainless steel, and the product pictures are all taken in kind, please rest assured to buy. Please carefully check the size that suits you before purchase. SIZE #7: Inside Diameter is 0.69(inch) SIZE #8: Inside Diameter is 0.72(inch) SIZE #9: Inside Diameter is 0.75(inch) SIZE #10:Inside Diameter is 0.78(inch) SIZE #11:Inside Diameter is 0.81(inch) SIZE #12:Inside Diameter is 0.84(inch) SIZE #13:Inside Diameter is 0.87(inch) SIZE #14:Inside Diameter is 0.91(inch)