Drain oil is discharged into an oil drain passage from an advance angle port and discharge port, or from a delay angle port and discharge port; the drain oil may be mixed with foreign matter. The present invention comprises a casino style wagering game against a dealer, comprising the steps of placing a wager, dealing a three card poker hand to each player, dealing at least three cards to the dealer, and paying the player on the bet when a poker rank of his hand exceeds the rank of a dealer’s hand. and a modulus of from 1 to 300 MPa at 25\xb0 C. The plate and the board may be received in the annular base member.