Desciption：
       550/600 DFC carbon fiber battery locating know set, use high strength reinforced plastic materials for injection molding. Suitable for 550/600 DFC helicopter model. Overall streamlined design, mortise and tenon design. Effectively enhance structural strength without increasing weight.
Specification：
Knob×1 (Φ16×Φ3×12mm) 
Locating Column×1 (Φ8×Φ4.5×19mm) 
Know Mount×1 (27.5×14×11mm) 
M2×5mm Button Head Screw×1
M2×6mm Socket Self-tapping Screw×2