This is a set of two green K&B Dream Designs T-Rex 450 Size Neon Tail Blades. K&B Dream Designs Helicopter tail blades are created using a complex combination of materials which provide the perfect mix of strength and flexibility. The blades have a very large surface area, yet weigh very little. The colorant is made to our specifications and is mixed as the blade is created. The color completely permiates the blade, and is not painted or applied. All similarly sized blades are the same weight, allowing the user to customize their tail rotor colors as desired. The T-Rex 450 Size Tail Blades are 59.6mm long and weigh just 1.5g and can be used for most 450 size electric helicopters.