Stem Adaptor

Tube OD 10mm x BSPT Thread 1/2", Tube OD 10mm x BSPT Thread 1/4", Tube OD 10mm x BSPT Thread 3/8", Tube OD 12mm x BSPT Thread 1/2", Tube OD 12mm x BSPT Thread 3/8", Tube OD 4mm x BSPT Thread 1/4", Tube OD 4mm x BSPT Thread 1/8", Tube OD 5mm x BSPT Thread 1/4", Tube OD 5mm x BSPT Thread 1/8", Tube OD 6mm x BSPT Thread 1/4", Tube OD 6mm x BSPT Thread 1/8", Tube OD 8mm x BSPT Thread 1/4", Tube OD 8mm x BSPT Thread 1/8", Tube OD 8mm x BSPT Thread 3/8"