Specifications:

Material: high-quality aluminum
Processing: CNC precision processing
Size: 1-1/4" to 1-1/4" O.D. Hose Barb Reducer Coupler with 1/8" NPT Side Port
Including: 1pc.
Advantage: Conveniently add a 1/8 inch NPT port to your top radiator hose
Integrated 1/8" NPT port for steam port recirculation or other instrument connection
Features:
100% brand new and never used.
Conveniently Add A 1/8" Npt Port Into Your Top Radiator Hose
Integrated 1/8" Npt Port For Steam Port Recirculation Or Other Gauge Connections
Package include:
1 x Steam port adapter    
All accessories as shown are included.