By A Mystery Man Writer
Evolving Onix into Steelix requires a special item : r/pokemongo, onix pokemon go
How to collect special items in Pokémon Go Gen 2: Evolving Onix
How to collect special items in Pokémon Go Gen 2: Evolving Onix
Everything you need to know about evolution items in Pokemon Go - CNET
9 Ways to Evolve Onix - wikiHow
Pokemon Go Update: How to Evolve Gen 2 Umbreon, Espeon, Steelix, Blissey, Scizor and more - Daily Star
Are you trashing your extra evolution items? : r/TheSilphRoad
A Full Guide On Pokémon GO Evolution Items
Pokemon Go: How to Catch Celebi
Metal Coat in Pokémon GO: should you use Metal Coat on Steelix or Scizor?
Pokémon Brilliant Diamond and Pokémon Shining Pearl Trainers Guide, Raising and Evolving Pokémon, Official Website