A quarry drilling tool with a steel rod and cutting end used with rock drills or pneumatic hammers.
A fleuret is a rock-drilling tool used in quarrying, typically a steel rod with integrated cross-shaped or flat cutting edges. It fits drilling equipment such as pneumatic hammers and perforators and belongs to the extraction technology that precedes the sculptor’s selection of a block.
Etymology
French quarrying term.
References
https://www.pierres-info.fr/glossaire/index.html