The blank is made of steel 9HS (DIN - 150Cr14), hardened to 59-61 HRC.
Dimensions: total length 180 mm, shank width 6 mm, blade width 20 mm, blade length 40 mm, shank thickness 3.4 mm, blade thickness 5 mm.
All blades are wedge-shaped with a wedge angle of 0.5 degrees, which favorably distinguishes from others, and is ideal for wooden planes with wedge fixation.
Blade have two sides - one hard, one soft (production feature)
Absolutely every knife is tested with a hardness tester.
The solid side has 2 points from the diamond cone - the test, and the control test.
Totally hand made at PETROGRAD factory of joinery and carpentry tools. Made in Russia.
Production - Russia.
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