Yamakichi Saw with sheath series is now on sale.

Replace any blade in the series! This is a DIY saw with replaceable blades.
Convenient to carry as it comes with a case. You can work outdoors with peace of mind. The saw blade is made of spring steel and has an impact hardened finish that prevents it from breaking and retains its sharpness. It is a professional specification that can handle a lot of felling work. The grip is wrapped in soft resin (elastomer) to fit your hand, so you won't get tired even when working for long periods of time. The saw is firmly inside the pod to prevent it from falling. There are a wide variety of blades to choose from, including ``DIY, gardening, household, and outdoor use'', and you can replace various blades with a single grip.

Yamakichi woodworking saw series with sheath
Yamakichi Bamboo saw series with sheath
Yamakichi fruit tree with pod/pruning saw series
Introduction here