[Super Slim]

The worlds first, newly structured flight system starts
COSMODARTS product fit flights, translating the common sense of traditional dart flights.
By using a new push-in system for firm and durable flights,
It is easy to handle and is excellent for covering beginners and advanced users.
Includes 6 flights.
Attaches only to fit flight specific shafts.
Please note that it cannot be attached to a regular shaft.

(From Amazon.co.jp)