Chemical Toilets -Toilet Knob Replacement Toilet Tank Knob For Home Toilet 48mm Highlights Generic Toilet Knob Replacement Toilet Tank Knob For Home Toilet 48mm new and High quality. Easy and convenient to install and use. 3 sizes available to select. Material: plastic Suitable for most toilets. Specification: Material: Plastic Diameter: Approx.58mm Diameter: Approx.48mm/1.89inch Diameter: Approx.38mm/1.50inch Package includes: 1 Piece Toilet Knob Note: Since the above size is measured by hand, the actual item size might be slightly different from the one shown above. Due to lighting effects, monitor settings etc. There could be a slight difference in the color tone of the pictures and the actual item.