Adapter – 1/8″NPT Male x 3/8″UNF Female | LIQUID LASER
1/8" NPT Female to M6 Male Nickel Plated Brass Pipe Adaptor/Adapter Straight Reducer Coupling: Pipe Fittings: Amazon.com: Industrial & Scientific
Acetylene/Fuel Gas Adapter - A Size Male to 1/8 NPT Male Acetylene/Fuel Gas Adapter "A" Male-1/8" Male | Arc-Zone.com [WES-133 (B-7)] - $3.00 : Arc-Zone.com, Welding Accessories Store
T-Piece with Male 1/8 NPT & Female 1/8 BSPP Fitting Connector - EQ-TP-1 /8BSPP