As a hunter, I use this saw much to cut by up to arm thickness trees and branches and I say that the saw is very sharp and keeps its promises must. Until now, I used a Billigsäge but after some time broke in Billigsäge the plastic handle and the sharpness was also soon after. Whether the Kobiki saw keeps the sharpness long I can not say but the Kobiki is super processed and looks very high. Whether soft or hard wood which passes like butter. Great !!!!!!