DJI Rc Helicopter Multicopter Quadcopter Flame Wheel ARF KIT F330 / F450 / F550 Spreading Wings S800 / S800 EVO DIY Accessory Kit Rosin-core Lead-free Solder Spool - 17m Length Sn 99.3% 75g 2.6oz 0.8mm Diameter Low-corrosive and few flux residue Flux core percentage at 2 percent Contains 99.3% tin Weight (g): 75 (2.6oz) Diameter (mm): 0.8 (0.031in); Length (m): 17