316 Stainless Steel, 1/2 in x 1/4 in Fitting Pipe Size, Reducing Adapter - 1DFY3|8-4 RA-SS - Grainger
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Amazon.com: NANYI 1/4 Inch Female to 1/8 Inch Male Stereo Headphone Adapter, Upgrade 6.35mm Jack Stereo Socket Female to 3.5mm Jack Stereo Plug Male for Headphone, Amp Adapte, Black 1-Pack : Electronics
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U.S. Solid Brass Hose Fitting, Adapter, 1/4" Barb x 1/8" NPT Male Pipe Fitting, 1/4"x 1/4", 3/8" x 1/4", 3/8"x 3/8",1/2"x 1/2", 3/4"x 3/4" - U.S. Solid
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Amazon.com: KOOTANS Forged Brass Reducing Hex Nipple, 1/4'' NPT Male x 1/8'' NPT Male Thread Adapter Brass Pipe Fitting Connector Couplings (Pack of 4) : Industrial & Scientific
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1/4" NPT Female x 1/8" NPT Female Straight 5000-04-02 Adapter | NPT Female to NPT Female - Straight | NPT to NPT | Hydraulic Adapters & Fittings | Hydraulics | www.surpluscenter.com
![Amazon.com: VCE 1/4" to 1/8" Adapter, 3.5mm 1/8 inch Male to 6.35mm 1/4 inch Female Audio Jack Gold Plated Adapter for Amplifiers, Guitar, Home Theater Devices, Laptop, Headphones - 8 inch : Electronics Amazon.com: VCE 1/4" to 1/8" Adapter, 3.5mm 1/8 inch Male to 6.35mm 1/4 inch Female Audio Jack Gold Plated Adapter for Amplifiers, Guitar, Home Theater Devices, Laptop, Headphones - 8 inch : Electronics](https://m.media-amazon.com/images/I/513S1CFgX1L.jpg)
Amazon.com: VCE 1/4" to 1/8" Adapter, 3.5mm 1/8 inch Male to 6.35mm 1/4 inch Female Audio Jack Gold Plated Adapter for Amplifiers, Guitar, Home Theater Devices, Laptop, Headphones - 8 inch : Electronics
![Proline Series 3/8-in x 1/4-in Compression Adapter Fitting in the Brass Fittings department at Lowes.com Proline Series 3/8-in x 1/4-in Compression Adapter Fitting in the Brass Fittings department at Lowes.com](https://mobileimages.lowes.com/productimages/76133804-d8bf-4570-831c-e1f96d981431/63181289.jpg?size=pdhism)
Proline Series 3/8-in x 1/4-in Compression Adapter Fitting in the Brass Fittings department at Lowes.com
![Amazon.com: tisino 1/4 to 3.5mm Adapter, 1/4" Female to 1/8" Male Stereo Audio Adapter for Headphone, Amplifiers, Guitar, Amp etc. - 1ft/30cm : Electronics Amazon.com: tisino 1/4 to 3.5mm Adapter, 1/4" Female to 1/8" Male Stereo Audio Adapter for Headphone, Amplifiers, Guitar, Amp etc. - 1ft/30cm : Electronics](https://m.media-amazon.com/images/I/71RgJCAlFkL.jpg)
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Amazon.com: Cable Matters 5-Pack 1/4 to 1/8 Headphone Adapter, 6.35mm to 3.5mm Adapter Male to Female, Gold Plated Stereo Headphone 3.5mm to 1/4 Adapter : Everything Else
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Amazon.com: JOMLEY 1/4 to 3.5mm Adapter, 1/8"(3.5mm) Female to 1/4"(6.35mm) Male Adapter, Quarter inch to 1/8 inch Stereo Headphone Adapter, Amp Adapter - 2 Pack : Electronics
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Parker - Industrial Pipe Adapter: 1/4″ Female Thread, 7/8-14 Male Thread, Male Straight Thread O-Ring x Female NPTF - 09107947 - MSC Industrial Supply
![LTWFITTING 1/8 in. x 1/4 in. I.D. Brass Hose Barb Reducer Splicer Fittings (50-Pack) HF3913R040250 - The Home Depot LTWFITTING 1/8 in. x 1/4 in. I.D. Brass Hose Barb Reducer Splicer Fittings (50-Pack) HF3913R040250 - The Home Depot](https://images.thdstatic.com/productImages/973dfb7b-8868-426e-8e92-ef49d5d0f980/svn/brass-ltwfitting-brass-fittings-hf3913r040250-64_600.jpg)
LTWFITTING 1/8 in. x 1/4 in. I.D. Brass Hose Barb Reducer Splicer Fittings (50-Pack) HF3913R040250 - The Home Depot
Airgas - RAD64003933 - RADNOR™ Model AW-15A, 1/4" NPT Male X 5/8" - 18 UNF B RH Female Brass Inert Gas Inert Arc Adapter
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