A thick clear acrylic 5 row tray that is designed to stack on top of another 100 tray with the two outside rows full of chips.
Note that 4gm 8gm and ceramic chips are slightly thinner than 11.5gm and 14gm chips and you'll probably be able to store 105 of these type of chips in this tray.
Temporary price increase due to low stock at this time, should return to 2gbp in September 2011