Back Cap Size Designation Long Compatible with Model 20FHD 20H-320-25R 20P 25 9 9F 9FVB 9HP 9P 9V 9VB PTA-9 PTA-9F PTW-20 WP-20 WP-20V WP-9 WP-9F WP-9FV WP-9V WP-R9F WP-R9FV Compatible with Series 20 20H-320 9 A-125 PTA-9 PTW-20 W-250 W-280 W-375 Welding Processes TIG Welding (GTAW) Compatible with Brand Weldcraft For Use With A-125 Series W-250 Series Reference Number 41V24 Package Quantity 2