5Pair/lot Amass XT90+ Plug Connectors Male Female For RC Model Battery DIY educational Toys each radio system uses 16

each radio system uses 16 different channels and 160 different types of hopping algorithm

Item:Aluminum Flange M4 Lock Nuts

The upper limit of rotation speed is 210

1 Pair x  Gemfan nylon folding propeller(only 2 pcs)

5Pair/lot Amass XT90+ Plug Connectors Male Female For RC Model Battery DIY educational Toys each radio system uses 16Protected to avoid shorting and reverse polarity Half open end, easier for welding. Suit for 90 120A current application. Metal connector size: 4. 5mm Package size: 10 * 10 * 2cm 4 * 4 * 0. 8 inch Package weight: 138 g 4. 9 oz Package included: 5PCS * XT90 Male connector 5PCS * XT90 Female connector