This is a KTC 9.5sq socket, size 24mm. The model number appears to be B25-24. There are some scratches and dirt from use, but there are no functional problems. How about it for DIY or your tool collection? [Brand] KTC [Category] Socket Wrench [Condition] Some scratches and dirt [Color] Silver [Size] 24mm [Other] 9.5sq. Made in Japan, B25-24 model.