About this item Kitchen sink Installation: under-mount, flush surface or installation Material: Satin Stainless Steel Grade: Stainless SAE 304 - 18/8 - A2 Food grade metal thickness: 0.8 mm The drain hole has a diameter of 90mm. Base cabinet: from 500 mm Sound absorbing pads Use silicone adhesive for fixing and sealing for all installation methods Box contents: kitchen sink, drain fitting, siphon, basket strainer, plug and overflow