Material: Our 45mm hollow screw sinks are made of high quality stainless steel, rust-proof and corrosion-resistant, sturdy and durable.Screw Size: Screw Diameter on Thread: Ø 12mm; Thread Depth: 1.75mm; Total Length of Hollow Screw: 45mm; Screw Head Diameter: Ø 15mm; Inner Diameter: Ø 8mmEasy to Install: M12 hollow screw for strainer basket valves, the slotted head is easy to fix, can be easily screwed and fixed with a coin or a single-type screwdriver. The edges are sharp and the installation is very convenient.Multi-function: stainless steel sink strainer screws, suitable for most kitchen sink strainers and sink strainer plugs, perfect replacement for lost or damaged sink basket screws, which provides you with a comfortable using experience.Package includes: The package contains 4 pieces drain strainer screws for valve drains, there are enough quantities available to meet your replacement needs. (Please check the size before purchasing)