What it does
Power 60 (Uncommon), 4x the Power of the Iron Pickaxe.
How to get it
Pickaxe Shop in the Safe Zone for $20K. There's also a Robux button.
Pro tip
The usual route buys it right after the Blue Trail, then trains to 50K Speed for Snowy. Robux shortcut: Pickaxe Tier 4, 49 R$ (tier match is our best guess).