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TOJOIN SMA Torque Wrench for RF Connector 8 in·lbs (0.9 N·m) Opening 8mm (5/16") for SMA 3.5mm/2.92mm Adapter Convertor Portable Spanner for Professionals Industry Blue - - Amazon.com
Fixed Break-Over Torque Wrench With 5/16 Bit For SMA Connectors Pre-set to 5 in-lbs