As advertized they wouldn’t even weld it started sputtering i think it was the glass was poor quality this product is crap little to no gas coverage will not weld worth a crap will be doing what i should have from the start and throwing these away and investing in a furic cup the right bead is these and left is my 8 ceramic cup with medium gas lense both at 90 amps glass cups dont hold onto the oring very well im constantly knocking it off