impurities come out

Because it is double-edged

As this cutter cuts with the edge near tip

Komachi Tough Case for Gardening Scissors

Blade Material: Carbon Steel

"SHIROGANE JUNTARO " Double Edge Hand Saw (Blade Replaceable) 195mm～225mm Petty impurities come out"SHIROGANE JUNTARO " Double Edge Hand Saw (Blade Replaceable) 195mm225mm Three HONMAMON Stars (link) This Japanese crafted, double edged hand saw possesses robust rust resistance. Maintained by MITSUKAWA SAWS from BANSHU and Miki City, this line of compact saws are ideal for delicate woodworking. Attention must be taken, however, as twisting may cause breakage. For best results, pull the saw when cutting. "Good work begins with good tools." BANSHU