Basic Trading Unit: 1,000 bushels.

Deliverable Grade: U.S. No. 2 Soft Red Winter wheat. U.S. No. 2 Hard Red Winter wheat. U.S. No. 2 Dark Nothern Spring wheat at par. Substitutions at differntials estabhlised by the exchange.

Price Quotation: Cents and eighths of a cent per bushel

Min Price Fluct.: 1/8 cent per bushel ($1.25 per contract)

Daily Price Limits: 20 cents per bushel above and below the previous day's settlement price. No limits for current moth on and after the second business day prior to the current month.

Contract Months: March, May, July, September, and December

Trading hours: 9:30 a.m. to 1:45 p.m. (Chicago time)

Last Day of trading: The seventh business day preceding the last business day of the month.

Last Delivery Day: Last business day of the month.

Ticker Symbol: XW

Date Trading Began: October 24, 1922