Set Wheel parts for Radio Control Helicopters, for the most popular on the market, such as the Syma S107, the LS107, HX701, X107 and all those helicopters with a rotor diameter of about 190mm in practice more helicopters sold in the market for 3ch and 3.5 ch. infrared or not.
It's also used on all brands of elicotterini of this size.
The package includes 2 pieces A (destrose) + 2pcs. B (sinistrose) as well as photos.
Single-blade length: 91mm approx.