A friend attended an an online lecture (unrelated to vehicle maintenance and repair) in which the instructor mentioned going into their mechanics toolbox to retrieve a tool that resembled an ice pick.
They made it sound like perhaps it had different heads with different diameters, and described the smallest one as "needle-like".
I can't think of any mechanics tools that resemble this description except perhaps an awl.
Any ideas what tool(s) to which they might have been referring?

