From A&F:

All Copper Elite Kits are light weight, hand engraved, and made from our exclusive raw copper shells, patented lugs, Mahogany hoops, and hardware, and come with Remo heads. 

We cut, roll, weld and sand each drum. Then treat them with our patented oxidizing formula to jump start the patina process.  We cut straight 45 Degree edges.  The Copper Elite Kit tunes lower then their size and are balanced with perfect punch, warmth, & attack.... AND are extremely microphone friendly!

Sizes: 9x13, 15x18, 14x24