Hardness within 50 mm of the cutting edge: Rockwell C
40/50. Blade: The cutting edge must be ground sharp, preferably with
An included angle of 18 to 23° and shall be ground on the
Front side of the blade. Blade: For digging hoes, the rise of the blade shall be small
(preferably less than 55 mm. The handle should be made of a suitable hardwood with a
Specific gravity of 0.66 to 0.80 after seasoning to not more
Than 20% moisture content. Length of handle (mm): 900 APP