Bottom valve without overflow protection made of stainless steel, chrome finish, highly resistant to corrosion and rust, as well as impact and scratch resistance. Easy to install, with a standard installation dimension of 1 \". This drain unit is suitable for all commercial sinks without overflow protection. It is automatic and operated with a simple fingertip touch for easy use. Easy to clean, the plug is removed without tools for quick and thorough cleaning. Warning: The sink's drain hole must be a regular round shape with a smooth, flat edge. If the sink's hole is uneven or rough, it will leak after you install this drain. Tired of looking at the old drain pipe in the sink when washing your hands? This drain valve is the ideal solution! This drain unit opens and closes with a click! Just gently press the top cover to retain water and press again to drain. Please note: This sink drain unit includes two different sealing washers, so to ensure a reliable seal, make sure these different seals are in their correct positions. Easy to clean - unscrew the plug. Install counter-clockwise, then remove for cleaning. High-quality materials: The drain is made of stainless steel, heat-resistant, with good thermal stability and oxidation resistance. Chrome finish, scratch-resistant. No overflow protection: This automatic bottom valve is suitable for sinks without overflow protection and is ideal for homes, hotels, apartments or other commercial spaces. Wide application: Thanks to the 1 1/4 \" connection, this automatic bottom valve fits most standard water traps and odor traps. Precise dimensions: Total height: 80 mm; Plug diameter: 37.5 mm; Thread diameter: 39 mm; Inlet connection size: 1 1/4 \". Easy installation: 1. Place the upper washer over the drain hole in the sink and apply silicone sealant to this position. 2. Place the main body in the sink. 3. Place the lower washer over the threaded section and apply silicone sealant to this position. 4. Tighten the locking mechanism.