Tochi Knob Bait Box This bait box was custom-made by a carpenter during the off-season when I was enjoying black sea bream and red sea bream fishing using the "otoshi-komi" technique on various offshore breakwaters in Akita. It was designed to hold "igai" (a type of mussel) and crabs (with air holes). However, after it was made, access to the offshore breakwaters was prohibited, so it has been stored unused.