Brian Redd Reviews the Swivel Ball Adapter:

Brief Overview: Experience true lighting freedom with the Swivel Ball Adapter from Ape Labs. This sturdy accessory allows you to mount Ape Labs and M6 Cans from any metal service and gives you the flexibility to lock in any angle within 540 degrees of freedom. The magnet on this mount also maintains a holding force of 17.6 pounds.

This adapter threads into the back of all Ape Labs Coins as well as M6 editions of Cans (replacement M6 bottom plates can be purchased for pre-M6 versions of Cans).

This adapter is used to hang your Can or Coin from any metal surface and lock in any angle within 540 degrees of freedom. The magnet has a holding force of 17.6lbs.
Weight: .66lbs
Size: 2.2 x 1.3 x 1.8 inches