You know what it looks like… but what is it called?
TAKE THE QUIZ“point chisel”
The following 2 entries include the term point chisel.
diamond-point chisel
noun: a cold chisel having a diamond-shaped cutting face for cutting V grooves or sharp internal corners
spear-point chisel
noun: a chisel with a triangular point for lathe-turning operations
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Merriam-Webster unabridged