Final answer:
An Allen wrench has a hexagonal (six-sided) shaft, not an octagonal (eight-sided) shaft.
Step-by-step explanation:
The statement is True. An Allen wrench, also known as a hex key wrench, has an hexagonal (six-sided) shaft, not an octagonal (eight-sided) shaft.
Allen wrenches are commonly used to tighten or loosen hexagonal screws or bolts, and their shape allows for easy grip and torque application.
Understanding the correct shapes of tools and their intended uses is important in various fields, including mechanics, engineering, and woodworking.