Steelcast is the name of one of the epic back blings for the game Fortnite Battle Royale. Just like the other back blings of the game, using this cosmetic item does not provide any function or benefit to the player using it.
The Steelcast back bling features a big metallic device that is attached to the back of the player equipping it. This contraption is made purely for aesthetic purposes and does not provide any benefits to the player.
This back bling is not a part of any set.
How to get it
You can get this back bling for free when you purchase the epic costume Steelsight for 1,500 V-Bucks. Although this item cannot be purchased separately, you can pair it freely with other outfits when unlocked.
Steelcast high-quality PNG images with transparent background to use them as you wish (YouTube thumbnails, skin concept and so on).
Used in-game to Shop and Locker, credit to Epic Games.