POSUGEAR Headphone Adapter jack 6.35mm (1/4 inch) to 3.5mm (1/8 inch)-2 Pack, 1/4 inch to 3.5mm Headphone Audio Jack Plug Adaptor Gold Plated-2 Pack : Amazon.co.uk: Electronics & Photo
1/8" F BSP to 1/4" M NPT Adapter, 2 pcs - On-Board Air
1/8" to 1/4" Stereo Adapter - Etymotic
Brass Adapter 1/8 NPT Male to 1/4 NPT Male
T7Design | 1/8" NPT Male to 1/4" Barb Straight Adapter
KOOTANS NPT Standard 4pcs 1/8" Male to 1/4" Male Pipe Adapter Brass Pipe Fitting, Hex Nipple Fast Coupler Fitting : Amazon.co.uk: Business, Industry & Science
Idex Threaded Adapter with Fitting, PEEK, 1/8" ID, 5/16-24 Flat Bottom (F) to 1/4" NPT(M) from Cole-Parmer United Kingdom
RS PRO 1/2 in, 1/4 in, 3/8 in Square Adapter | RS
Sennheiser Universal 1/8" to 1/4" Headphone Adapter 549346 B&H
Adapter Spigot 1/4''F and 3/8'' screw - 119 | Manfrotto Global
1/8" BSPT Male x 1/4" BSPP Female Adaptor | Pneumatics Direct
Brass Barb BSP Connector Hose Pipe Adapter Air Gas 1/8" 1/4" 3/8" 1/2" 3/4" 1" | eBay
Central Lubrication 1/4-28 UNF Male x 1/8 BSP Female 90 Elbow Degree Adaptor Grease Line Adapter Fitting Ideal for Centralised Systems
3/8" Male Screw to 1/4" Male Screw Coupling Adapter | Equip2Clean
KOOTANS 4 Pieces Heavy Duty 1/4 NPT Male Thread to 1/8 NPT Female Thread Brass Reducer hex Bushing Brass Fitting Pipe Hose Adapter Convert : Amazon.co.uk: Business, Industry & Science
Reducer Pipe Adapter 1/4 Female Npt to 1/8 Male Npt Brass Fitting Water Air Gas | eBay
Master Airbrush Brand 1/4" BSP Female to 1/8" BSP Male Fitting Conversion Adapter Bushing, Connector for Airbrush Hoses and Compressors : Amazon.co.uk: Home & Kitchen