I used this over 20 years ago. There's a dent on the shank, and some blackening on the outside remains (though I polished it off quite a bit). It shows considerable signs of use. Cup Inner Diameter: 17.5mm Cup Depth: Medium Deep Throat Diameter: 3.8mm Rim Thickness: Medium Wide This is being sold as a junk item, so please understand and accept it with no claims and no returns.