Sealey Bull Nose Adaptor for fitting industrial gas regulators to welding gas bottles. This adaptor is designed to convert the small-bore hosing (normally Ø4mm OD) found on portable MIG welders for use with industrial size gas regulators and cylinders. Model Number: 120/432102. Weight: 0.17kg. You can order just the bull nose adaptor (Model No. 120/432102) and hose (Model No. AK9) or a complete kit including regulator (Model No's REG/KIT/MZ or REG/KIT/MO).