On conventional tools, the color of the cogs are all the same which is not useful, so we classify our cogs by different colors.
You can easily change the cogs with a coin.
・
① Classified the cogs by color :
space between points 4mm, 6mm → color: Black
space between points 5mm → color: Gray

② You can easily use a coin for changing the cogs.

③ You can use the tool safely and exactly with the knurled part of the body.
Plating the body prevents rust.

④ Engraved “Japan” on the body.