Remember trying to drill into old, petrified barn wood with a regular bit. Burned through two of them before I grabbed a cheap carbide spade bit from the bottom of my bag. Thing chewed right through like it was nothing and I haven't looked back since.

Saw a barber on YouTube talking about this exact thing. He said a narrower comb is like using a smaller paintbrush, you just have more control over where you put the line. Makes total sense for those tricky spots around the ears and neckline where a big comb can feel clumsy. I bet it helps a ton with keeping the fade crisp.