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Amazon.com: SiYear 3.5mm 1/8 inch TRS Plug to 6.35mm 1/4 inch Jack and 3.5mm Female to 6.35 Male Plug Gold Plated Set Audio Stereo Adapter Converter for Headphone, Microphone (4 -Pack) : Electronics
Amazon.com: KOOTANS 1/4 NPT x 1/8 NPT Male Solid Brass Nipples, Heavy Brass Pipe Adapter Fittings Hex Reducing Nipples Connectors 4Pieces : Industrial & Scientific
Amazon.com: GlowShift 1/8 BSPT Male to 1/8-27 NPT Female Gauge Sensor Sender Thread Adapter Reducer : Automotive
AutoMeter 1/8in NPT To M12 - 1.5 Electric Temperature Gauge Adapter
AutoMeter 1/16in NPT Male To 1/8in Female Fuel Rail Gauge Adapter
LTWFITTING 1/4 in. FIP x 1/8 in. MIP Brass Pipe Adapter Fitting (5-Pack) HF1024205 - The Home Depot
LTWFITTING 1/8 in. OD Comp x 1/8 in. FIP Brass Compression Adapter Fitting (5-Pack) HF662205 - The Home Depot