Made by 'knock' for Dear Green.
Ceramic black steel with beech handle.
Available in 58.35mm, 58mm or (53mm - stainless steel)
With a surface strength up to 85% stronger than equivalent stainless steel this case hardened base is the product of controlled environment oxidisation and ultra heat treatment leading to a finish that is actually part of the micro-cellular structure of the steel and not just an applied layer.
It produces a surface that is used in industrial bearing races and gearing mechanisms for its reduced friction and long life in high wear and tear applications. As such it is used in the gunmaking trade and in the oil and gas industries amongst many others.