A single 4mm Carbon Fiber arm, for 5" props, as installed on the stock 250 Pro. Note that a 6" version of the arm is also available for those who wish to turn the 250mm quad, into its 275mm big-brother.
A single 4mm Carbon Fiber arm, for 5" props, as installed on the stock 250 Pro. Note that a 6" version of the arm is also available for those who wish to turn the 250mm quad, into its 275mm big-brother.