This high quality CNC aluminum and steel pro hex driver set includes replaceable tip drivers in three popular sizes to ensure easy and quick maintenance of your 400, 450, and 500 size helicopter. Each driver is color coded and labeled with “size rings”. Included sizes: 1.5mm (silver - 1.5 rings)/ 2.0mm (blue - 2 rings) / 2.5mm (black 2.5 rings).
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RC-TEK Parts/Upgrades 
