Lenco AF-50 500 Amp Electrode Holder — USA Made Other Welding Accessories It has a CGA 540

It has a CGA 540 inlet and neoprene diaphragm

1    1/2-1"

020 high tensile strength wire will outlast thinner wire brushes

such as the Lincoln Electric Eagle™ 10

It is a 5/8" ID nozzle with course thread that fits Tweco #5

Lenco AF-50 500 Amp Electrode Holder — USA Made Other Welding Accessories It has a CGA 540The Lenco AF 50 is a professional grade, USA made electrode holder rated at 500 amps, built for demanding stick welding (SMAW) applications. Designed for welders who need reliable performance under high amperage conditions, the AF 50 delivers a secure, low resistance jaw grip and exceptional heat dissipation. Key Features 500 amp capacity for heavy duty stick welding Manufactured in the USA to Lenco's exacting standards Heat resistant insulated handle