3.5g per 8 pcs. Ultralight designed for Avata 2, the motor cover is not more than 1g individually, so it does not affect the weight and does not cause vibration, so the flying experience is not affected. Protect your engines from dust, water and scratches. Easy installation: remove the propellers, line up the holes and install the covers, put the propellers back and tighten the screws. Motor covers do not affect heat dissipation. Size: 21.2*6mm. Price for 8 pieces