The body of the kaleidoscope is made of A durable green powder coat. There is a nicely made black plastic piece that snaps in to hold the cell and unsnaps to allow cells to be changed in and out. The eyepiece Body and Object cell housing are Aluminum and are powder coated. 2 mirror system and oil filled cell. The oil filled cell is interchangeable does indeed come with one puck as shown here. This one puck that is included is a special Dichroic Glass and Wine and Grapes Themed cell.
Solid Metal and Durable Powder coat Exterior Construction
Oil Filled Colorful Interchangeable Object Cell
Each puck is 2 1/4 inches in diameter by 7/8 inches thick.