Bone Fitting Set acc. to Dr. Hohl & Dr. Hildebrand

Bone chisels are used to gain bone chips, to shape bone structures and to widen bones from the cranial side.
The pointed chisels are used for the first widening of the
maxillary crest. The flat chisels smoothen and shape bone structures.

https://www.zepf-dental.com/wp-content/uploads/PDF/katalog/HZ_Dental_Catalog-E.pdf#page=207