Contract unit: 40 percent of the size of the underlying contracts or 400 barrels of crude oil and 4,000 million British thermal units of natural gas
Minimum Price Fluctuation: $.025 per barrel for crude oil and $.005 for natural gas
Maximum Price Fluctuation: $15.00 per day, in two stages, for crude oil and $2.00 per day for natural gas, in two stages, except for the last two days of trading, when there no limits
Listed Months: First nearby month only, except for the last four days of trading, when the second nearby month will also be listed
Expiration: Parallels the underlying futures contract
Settlement: The contracts will be financially settled, based on the final settlement price of the underlying primary contract. Each day's settlement will also reflect the settlement of the underlying market.
Maximum Transaction Size: 50 contracts