
Yes - mine are 3/8".Not sure what you are trying to determine with this thread but FWIW I have the Genius Tools semi deep impact in 19mm.
It measures 52.3mm tall (the 21mm is the same). No easy to read laser etching, just stamping. Has the oring groove for pin through anvils. Not that I care about that feature, I don't have any impacts with the through hole anvil anyway. Made in Taiwan. But mine is 1/2" drive, looks like yours are 3/8"?
Are the GP and the Sunex stamped as well as laser etched or just laser etched?Yes - mine are 3/8".
My main goal was to highlight that GP and Sunex are not the same socket. I have read numerous posts on here that they are the same product, just sold in different boxes.