Fit 3.5 inch sink drainDesigned exclusively for narrow rectangular center hole sink,Uni-Green Strainer & Sper bo fit standard 3.5-inch kitchen sink drain. Please measure your drain dieter before chase 304 SS Anti-CorrosSuperior to rust-prone 201 steel/plastic,our 304 steel resists deformat and chemical corros for 3x lonvity 10-Second Tool-Installatpatible with narrow rectangular holes only – pr to se instantly! Smoother surface repels grease,rinses clean in seconds Modes: Strain or Store WaterCli between strainer mode (trap debris) and sper mode (fill sink). Prevent clogs while washing dishes effortlly Reinforced Leak-Proof StructureLaser-welded fre and dense mesh prevent bending/leaks. Handles heavy pots without slipping.