Long-distance trade of obsidian, adzes, and favourable adze source rock and shells was practiced. Khalaf also found a well-made adze and a narrow, slightly polished chisel. The wood was often hand-hewn with an axe and/or adze. The adze of a mattock is useful for digging or hoeing, especially in hard soil. Scrapers, engraving tools and adze blades were also included in their toolkits. The finds include palstave axe heads, an adze, a cauldron handle and a gold bracelet. Once hollowed out, the interior was dressed and smoothed out with a knife or adze. These large timbers were shaped with both adze and broadaxe. A stone adze was used by relatively gentle, but regular and repeated blows. It is believed the site was primarily a factory for making stone adze heads. The burnt wood was then removed using an adze. The second edge is crossways, as for an adze. There is no defense against an adze. Using a K-tool and the adze end, a lock cylinder can easily be pulled. The adze is depicted in ancient Egyptian art from the Old Kingdom onward.