UW-1518-2
NEW Blackhawk Proto UW-1518-2 9/16" Deep Length Impact Socket, 1/2" Dr, 6Pt
You will find that SUPERMICRO often includes extra mounting brackets.
Blackhawk Proto UW-1518-2 9/16" Deep Length Impact Socket, 1/2" Dr, 6Pt
You will find that the vise parts have a locking mechanism that prevents slippage.