Up for sale is a medium (16.5) Kona Unit frame. This frame is steel and will fit either 27.5 plus or 29 tires, and the rear axle is spaced at 142mm. The heat tube is 44mm, so you can use either a 1 1/8 straight or tapered fork, depending on what headset you decide to use. The seat tube is 27.2 and has had a small hole drilled in the lower portion of the seat tube near the bottom bracket for routing the cable to an internally routed dropper seat post.
I have tried to show any imperfections as best as I can in the photos.
If you have any questions or need more pictures, feel free to message me.