By A Mystery Man Writer
Pokémon BDSP: Where to Find Metal Coat (& What It's For)
The Best Pokemon and Items to Save for Pokemon Go's Second Generation
Metal Coat in Pokémon GO: should you use Metal Coat on Steelix or Scizor?
The Best Pokemon and Items to Save for Pokemon Go's Second Generation
Forum Thread - PokéHeroes, pokemon onix evolution level
Onix (Pokémon) - Bulbapedia, the community-driven Pokémon encyclopedia
iOS (Page 58)
Pokemon Go: how to evolve Scyther into Scizor, Onix into Steelix
Pokemon Go: how to evolve Scyther into Scizor, Onix into Steelix
Steelix, Pokémon GO Wiki