Amazon.com: Devinal XLR Female to 1/4" Female calbe, 3 Pin XLR Female to 6.35mm Socket Audio Cord, XLR Jack to TS/TRS Quarter inch Adapter Connector Converter Metal Construction 1 feet (30 cm) :
Everbilt 1/2 in. x 3/4 in. Copper Pressure Cup x FIP Female Adapter Fitting C603HD1234 - The Home Depot
GlowShift | 1/4-18 NPT Male to 1/8-27 NPT Female Thread Adapter
Brass, 1/4 in x 1/8 in Fitting Pipe Size, Reducing Adapter - 46M456|706120-0402 - Grainger
Charlotte Pipe 1-1/4-in Schedule 40 PVC Socket x Female Adapter - White (NSF Safety Listed) in the PVC Pipe & Fittings department at Lowes.com
Unique Bargains Pipe Fitting Reducer Adapter 1/8" NPT Male x 1/4" NPT Female for Water Oil Pressure Gauge, Stainless - Walmart.com
Proline Series 3/4-in x 1/2-in Threaded Female Adapter Fitting in the Brass Fittings department at Lowes.com