Grinders are a trio of semi-standard decks from Randy Butterfield's Midnight Card company.
Designed for maximum playability with a hint of grandeur and opulence the decks feature:
 
Blue & Copper Decks:
Silver and Blue Foiled Tuck boxes (Blue Deck)
Silver and Copper Foiled Tuck boxes (Copper Deck)
Premium Black matte card stock
Classic Finish
Printed by Legends playing cards
 
White Gold Deck:
Black and Gold Holographic Foiled Tuck boxes
Premium White matte card stock
UV Spot varnish overlay on Card backs.
Individually Numbered and custom die-cut deck seal
Limited to 500 Decks
Classic Finish
Printed by Legends playing cards