2 stage. I think it was 76.00 a qt. base coat urethane. I'm using a slow 75 deg and above (since it's summer) reducer(now like $30/gl) On these openings, I'm just spraying a couple of thin coats of base coat (blue) & adding a couple of shots of clear w/a dash of med hardner to the last coat. Med 'cause I had extra.