Steel Welding Key -Straight - Part # 050648. Pull Tabs for GYS Stud Welder - Keys are OEM from GYS Tools. Interchanges with and replaces GYS-050655. Electrode Style B: Dent Puller Magnetic weld Key Electrode, works with both straight and twisted weld keys, designed to work with many different types of dent pullers, Such as the dent fix, GYS, and others, the 9.50 mm slip glide stud.