OK I'll bite.

The screws hold the reel together.

Many of the more expensive reels are machined from aluminum and they
are lighter and maybe a bit smoother and just about as durable. Many
of the more expensive reels have a better-than-Pflueger drag if that's
what you need.

Willi uses Pfluegers sometimes and generally catches every fish in the
river and some from dry land too.

bruce h