【Universal Compatibility】Includes stainless steel and flexible drain pipes, fitting various sink openings (1-1/2" to 1-3/4") and drain hole diameters (1-1/4" or 1-1/2"), meeting US standards. 【Easy Installation】Flexible and expandable design requires no tools, allowing for quick and simple setup without professional help. 【Space-Saving Design】Eliminates the need for traditional P-traps, simplifying installation and optimizing under-sink space utilization. 【Anti-Clog & Odor Prevention】Features a pop-up stopper that collects hair to prevent clogs, while also preventing water backflow and unpleasant odors. 【Durable Materials】Pop-up drain stopper made of brass and 304-grade stainless steel for rust resistance, with ABS drain pipes that are sturdy yet flexible to adapt to various shapes. Specifications: Compatibility: 1-1/2" to 1-3/4" sink openings Drain Hole Diameters: 1-1/4" or 1-1/2" Drain Stopper Material: Brass and 304-grade stainless steel Drain Pipe Material: ABS plastic Installation: Tool-free, flexible design