LEGO 9621 – Monorail Accessory Track This is an original and complete set. All parts are included. The original box is included and in very good condition, with minimal signs of age. The instruction manual is included and in good condition; please note that it has small perforator holes. This accessory set can be used to expand the following monorail sets: LEGO Space set 6991 – Monorail Transport Base LEGO Legoland set 6399 – Airport Shuttle A very unique and highly sought-after set, essential for completing or expanding a LEGO Monorail system. A true collector’s item.