If you're not satisfied with the product, you can return it, so please consider purchasing! This is one unused, brand new, genuine wrench specifically for the STOKKE TRIPP TRAPP chair, a STOKKE (Stokke) classic. This is a brand new, unused, genuine part purchased from an authorized STOKKE dealer. At the official STOKKE online shop, you can only buy a set of one wrench, 10 bolts, and 6 nuts for 3300 yen (2750 yen + 550 yen shipping), so how about this for those who only need a wrench? I will sell one wrench for 420 yen. It will be shipped by regular mail. Delivery is expected in about 3 business days in the Kanto region. If you are in a hurry, it can be shipped by Letter Pack for an additional 330 yen. Please ask if you have any questions.