New coffee tamper. Solid FDA food grade stainless steel, 58mm diameter and
it weighs 10.5 oz. This is a common size for home espresso machines. There are other sizes so check to be sure the 58mm will fit your machine. It comes with a 1" set screw that is 3/8" x 16 tpi.
You can use any of my mandrels with the tamper and you would just turn the
handle as you would a bottle stopper or bottle opener.