Do chisels need to be protected from rust?
Chisels should be cleaned after use with a cloth soaked in a little oil to prevent rust.
What HRC rating/hardness does the chisel have?
The hardness of the chisel is HRC 58-62.
What hammer can I hit it with?
When tapping, use an iron hammer, wooden mallet, rubber mallet, etc.
Which whetstone color is 120 and which is 240?
Dark gray has a grit of 120 and light gray has a grit of 240.
What is the chisel length? Is it suitable for children?
The outside should be approx. 26-28 cm in size, not suitable for children.