Nozzle Insulator, Compatible with Brand Tweco, Compatible with Model Tweco 500AMP, For Nozzle Series 25CT, Maximum Current 500 A, Welding Processes MIG Welding (GMAW), Connection Type Threaded, For Use With Tweco, Outside Diameter 1 1/8 in, Overall Length 2 1/16 in, Package Quantity 2