Blueprint billiards sweat series, what do you think are 150 or other models? Where can I tell? I want to collect a second-hand blueprint, but I can't remember what model it is.

There is a product information label at the end of the new club. If it is second-hand, there is no way to confirm it. Domestic clubs don't recommend buying second-hand ones because new ones are not very expensive. Most brands are sold at 20% off the original price. If it is for your own use, it is more cost-effective to buy a new club.