RIB 1/4 inch NPT Male to 1/2 inch NPT Female Brass Pipe Fitting Reducer Adapter | Shopee Philippines
Aluminum Adapter, 1/4" Male NPT to 1/2" Female NPT | Air & Hydraulic Equipment,Inc.
M14 Female to 1/2 inch 1/4 inch M10*1 Male Pressure Gauge Fittings,M20 Female to 1/2 inch 1/4 inch Male Pressure Gauge Adapter|Pipe Fittings| - AliExpress
EEEkit 4-pack 3/8" to 1/4" 1/2 inch Socket Adapter Reducer Air Impact Set for Ratchet Handles, Extension Bars Accessories - Walmart.com
4pcs/lot 1/4 3/8 1/2 Drive Socket Adapter Converter Reducer Air Impact Socket Wrench Adapter Hand Tools Set|Wrench| - AliExpress