Product Details This is a compatible magnetic oil for the Mag Shield system used in Daiwa spinning reels. * Made in Japan. * Unlike the inexpensive isoparaffin type, this is an alkylnaphthalene-based magnetic fluid with low volatility and excellent dustproof and waterproof sealing properties. * Magnetic fluids are broadly classified into water-based, isoparaffin types often used in scientific experiments and speakers, alkylnaphthalene types (which are slightly more expensive but offer superior sealing and low volatility), and fluorine types (which offer excellent heat resistance, chemical resistance, and sealing properties). This product is a high-quality industrial magnetic fluid of the alkylnaphthalene type, which is considered the best for Mag Oil. * I have personally tried many Mag Oils sold on Yahoo Auctions, Amazon, etc., but regardless of the sealing properties, they had problems with volatility. In all cases, they evaporated within a year, and in some cases, as quickly as three months if left in a car during the summer. Both products claimed to be high-quality, but the ingredients were not listed, and they were likely isoparaffin types. If you are looking for Mag Oil, I strongly recommend that you first ask the seller whether it is alkylnaphthalene or isoparaffin type! It's best to avoid isoparaffin types or if you can't get a clear answer! It's likely to be the inexpensive isoparaffin type. This product is completely made in Japan. It is a high-quality magnetic fluid manufactured by a manufacturer in Kanagawa Prefecture. This product is not available to individuals. MSDS (Material Safety Data Sheet) is also available, so please check the images for details. Recommended Points * The viscosity is quite low, so the rotation is smooth and the reeling is light. * Volatility is also quite low, and it has excellent durability. * The content is 0.5ml, so you can use it generously. * Comes in a bottle with a dropper. ※ The bottle capacity is 1ml, so it only contains about half of the container, but this is not a mistake, so please be aware.