Hard water filter for home use. Suitable for kitchen, bathroom, washing machine, toilet, shower head, kitchen sink, and bathtub. Reduces mineral scale to protect fixtures and improve cleaning efficiency. Anti-scale in-line filter with clear shell. Observe the filter element status at a glance and replace elements in time. Easy to install and maintain as part of an inline water filtration system. Durable construction. Made from ABS shell with PP cotton filter media to ensure safety and reliable performance in daily use. Designed for inline installation across multiple fixtures. Whole-home compatibility. Builds cleaner water supply for washing machines, water heaters, showers, and other taps. Helps reduce scale buildup and improves overall water quality in the home. Use scenarios: - Kitchen or sink: install at the faucet to soften water for cooking, coffee, tea, and dishwashing, reducing mineral deposits on cookware and surfaces. - Shower or tub: attach to the shower head to minimize scale and provide a more comfortable shower experience. - Laundry and appliances: place in-line before washing machine or water heater to protect equipment and extend service life by reducing hard-water scaling.