ItemDex - Power Belt

Power Belt - Lists all details for the item including descriptions and locations across all Pokémon games

ItemDex - 70 Power Items

List of items by pocket (HeartGold and SoulSilver) - Bulbapedia, the community-driven Pokémon encyclopedia

List of items by pocket (Brilliant Diamond and Shining Pearl) - Bulbapedia, the community-driven Pokémon encyclopedia

Expert Belt - Bulbapedia, the community-driven Pokémon encyclopedia

ItemDex - Ability Capsule

List of items by pocket (Black 2 and White 2) - Bulbapedia, the community-driven Pokémon encyclopedia

ItemDex :: Team DELTA

PokeMMO Item Dex 2019 - Work In Progress Guides - PokeMMO

Power Belt, Pokémon items

Held Items - Pokemon Sword and Shield Guide - IGN

ItemDex - Fist Plate