Description Brand RJXHOBBYShape Symmetrical WingLength 550mmWidth 50mmRoot 12mmBolt Hole 4 0 mmWeight Approx 110g 1 pc Material Carbon FiberApplication T rex 550 Gaui X5 KDS Agile 5 5 Class 550 size or other similar size helicopters Features The 550MM main blades are designed specifically for extreme 3D flying The design is reducing blade noise and power loss The blades rigidity have been increased for better anti torsion characteristics during flight Package Include 1 Pair 550mm Main Blades