There are many types of awl ~ the common characteristic being a comfortable small handle holding a long thin sharp pointed blade. The blade is invariably round in section ~ although there are specialist awls of triangular or square section.
A shoemaker ~ or cordwainer ~ will use several awls. Some awls concentrate on the sharpness of the point ~ for piercing holes. Some have an increasingly large diameter of blade for enlarging holes. Others are used as levers for prising layers of leather apart ~ or together ~ or other skills peculiar to their trade.