Very reasonably priced set of replacement blades. As anyone with children will know the not infrequent collision of RC helicopters with walls etc gradually wears away the edges of the blades and slows performance. A replacement set is essential and this one while taking a LONG time to come, arrived without mishap. It takes a while for the original blades to wear away so the delay was negligible. If the colour scheme would have matched the original it would be perfect hence only 4 stars.
I ordered them having read other reports. Despite a lot of severe "crashes", it is still in its original condition. If you order a helicopter - order these! A must have - even although I have not yet had to use them.