HBS = Hiking/Backpacking Series. Smaller and lighter for all of your backpacking needs, while still carrying on the BKT tradition of rock solid dependability at rock bottom prices in the blade sizes that you WANT.
Naming each one is similar to my last post. I can NOT tell you how important it is to make the names make sense to the consumers. Because most of the blades look like mini versions of a larger becker, PLEASE don't give them crazy names.
HBS2 = Drop point
HBS7 = clip point
HBS5 = = trailing point
Full name is then the BKT HBS2, etc.