You are Buying a brand New And Factory Sealed Plumbers Edge 1/8 in. Steam Angle Vent #4 Set Hole 

                                                          Product Overview
The # 6 1/8 in. IPS Angled Steam Radiator Vent Valve is designed for a heating application. It installs easily on most steam radiators.

# 6 1/8 in. IPS angled vent valve for a steam radiator
Installs easily on most steam radiators
Designed for a heating system
Fixed vent size .1850

The # 6 1/8 in. IPS Angled Steam Radiator Vent Valve is designed for a heating application. It installs easily on most steam radiators.