UK 18-8 ジャンボカクテルシェーカー

The product you mentioned, "4520785090509 YUKIWA UK 18-8 ジャンボカクテルシェーカー" appears to be a jumbo cocktail shaker made by Yukiwa, a renowned Japanese brand known for high-quality barware. The "18-8" typically indicates that the product is made from stainless steel with 18% chromium and 8% nickel, which provides excellent durability and resistance to rust and tarnishing.
This type of cocktail shaker is used for mixing drinks effectively and is popular among bartenders and cocktail enthusiasts. If you're looking for information on how to use it, recommendations for cocktails, or where to purchase it, let me know!