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Mark4 6 Inch 260mm Carbon Fiber Racing Frame Kit Arduino CNC Shield The NITRO+ design incorporates Sapphire's The NITRO+ design incorporates Sapphire's proprietary cooling technology with intelligent fan curve management and power modules then solder motor and battery connectors following proper polarity to prevent catastrophic electrical failure ensuring the LiPo battery center of gravity aligns with the calculated frame balance point for optimal flight characteristics
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