DIY weights, I think they're used for weighing fishing drag…

Fastest way to make Drifting weights ( something new )

Sinkers - how much weight should you use - The Fishing Website

Long Distance Casting in the Surf

Flies and Weights - Troutbitten

Drop-Shot Bass Basics - On The Water

Bottom Fishing 101 - SHAKE N' BAKE SPORTFISHING

Fishermen are accused of using weights in winning fish to cheat at a tournament : NPR

Drop Shot Rig Fishing and Rigging Tips - Wired2Fish

What does a reel's size number actually mean? Is it not the recommended weight of the line? (Story in captions) : r/FishingForBeginners