Thank you for viewing. ◆ Please note that we cannot offer discounts on this product, and comments requesting a discount may be deleted. This is "Height Rail," a 2L (4 bottles) 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 with a brush or sponge on red rust, yellowed metal, etc. After use, immediately rinse thoroughly with water. (Dilute according to the stain) 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. When using, wear rubber gloves and goggles. Avoid using spray-type atomizers as much as possible. If it gets into your eyes, immediately rinse with plenty of water for more than 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 by Kuroneko Yamato (Yamato Transport), but Depending on the shipping area, it may be changed to Mercari delivery or other services. ◆ You can specify the delivery time, so 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) Type of equipment...Cleaning/detergent supplies Detergent form...Liquid Set quantity...4 sets