Thank you for viewing. ◆ Please note that we cannot offer discounts on this product, and comments requesting a discount may be deleted. ◆ If you wish to purchase, you can buy it directly without leaving a comment. This is a set of two 2L bottles of "Heightrail" boat hull cleaning cleaner for fishing boats. It seems that many people also use it on vehicles (trucks, etc.). ◆ Applications Cleaning yellowing/rust/water stains/iron particles, etc., attached to stainless steel surfaces and FRP surfaces. ◆ How to use Apply the detergent thoroughly to the stained areas of red rust, yellowed metal, etc., using a brush or sponge. Immediately rinse thoroughly with water after use. (Dilute according to the degree of soiling) Usually (approx.) 2-3 times dilution. (In the case of boats, many people use it undiluted.) ◆ Quality indication Nature...Acidic ◆ Caution Never mix with other detergents, as it is dangerous. Wear rubber gloves and goggles when using. Avoid using spray bottles as much as possible. If it gets into your eyes, immediately rinse with plenty of water for at least 10 minutes and seek medical attention. Keep out of reach of small children and pets. Please read and understand the "Warnings" on the product label before use. Shipping method Basically, it will be shipped via Kuroneko Yamato (Yamato Transport), but depending on the shipping area, it may be changed to Sagawa Express, Mercari delivery, or other services without notice. ◆ You can specify the delivery time. If you have a preference, please select from the following: (No specification, Morning, 14:00-16:00, 16:00-18:00, 18:00-20:00, 19:00-21:00) ※ For Okinawa, Kyushu, and Hokkaido areas, it will be shipped from Yu-Pack (post office counter) (please note that we cannot ship on Saturdays, Sundays, and holidays).