This is the 0.8mm Tin Lead Rosin Core Solder Wire Reel. This reel is used for soldering electronic parts like circuit boards. The wire is non-corrosive and 168cm in length. The melting point of it is 361F/183C.
If you would like your part to be shipped out the same day of your purchase, just order it before 5pm PST, Monday-Friday. Also, you can apply for a wholesale account right here, if you want to buy in bulk.