This is a ROCKBROS 44-in-1 bicycle tool kit, which I bought new last month. ROCKBROS is known for its reliable bicycle accessories. I bought it because I thought I should learn to do my own maintenance, but it was bigger than I expected and I got a little intimidated. In the end, I just had the shop do it all, and I only opened it to take these photos. Similar kits on Amazon easily exceed 10,000 yen, so I think this is a great deal for anyone who does their own bicycle maintenance.