From Mattel Hot Wheels Mechanix, set #25675 featuring an off-roadster that transforms into a red helicopter.  Copyright 1999.  

Set is new in original, unopened box.  Box measures 12" x 8" x 2.75"; it weighs 1 pound 5 ounces.  Includes 3 LR44/AG13 button cell batteries.  For children ages over 6 years.

Shipment by US Postal Service Ground Advantage mail.