High Quality Materials Made of brand new ABS materials, non-toxic and harmless, durable. Suitable for mounting in round ceramic hole diameters from 38mm to 45mm. Easy Installation All parts are included for easy installation. Features dual flush water-saving functionality and is compatible with most dual flush toilet systems. Modern design. Double Press Toilet Accessories Includes long screw rods that can be trimmed according to needs, adjustable to different toilet heights, flexible and convenient. Dimensions Thread diameter: 38mm. Compatible with most double flush toilets. Ideal Choice Suitable for most one-piece toilets, two-piece toilets, squat pans, and toilet tanks. An excellent alternative to the standard toilet flush button.