Insulator Compatible with Brand Bernard Series Centerfire Compatible with Series XR-Aluma-Pro XR-Aluma-Pro Lite Compatible with Model 300001 300003 300004 301568 301569 301570 301571 301572 301573 For Nozzle Series Large Centerfire Small Centerfire Welding Processes MIG Welding (GMAW) Color Black Features Extends Life Withstands Heat Abuse For Use With Centerfire Contact Tips nozzles and gas diffusers Material Rubber Outside Diameter 0.91 in Overall Length 1 1/40 in