This propeller is made of high quality Fiber Reinforced Plastics， which is extremely lightweight and durable and It is just designed for 550 RC helicopter . You can expect an increase in overall motor efficiency with this excellent propeller.

Description:
Fiber Glass 550mm main blades
Material: Fiber Glass
High Thrust
High durable
Extremely lightweight
Suit for RC 30 class helicopter !#!amp!*! 550 helicopter


Parameter:
Length: 21.6 Inch/550mm
Material: Fiber Glass
Shaft Hole diameter: 4mm
Product weight: 226g

Package information:
Package size: 55 * 5 * 1 cm / 21.6 * 2 * 0.4 in
Package weight: 231g / 9.6 oz

Package list:
1 * pair Fiber Glass 550mm main blades