Orlando,
I purchased those at Lowes. It comes in a one piece bus bar with nine terminals (in the section of electrical with the heat shrink). I put it on the band saw and grouped them into three's, two spares. You will have to tin the ends of the wires with solder or the wires will flatten out and not compress betwwen the screw and the block. I am running at a "max" Amperage of about 67-69 amps in the FAI-P & F program's. I have used these for years in other areas of the electronics industry with AC and DC voltage.
The only reason I used this bus bar is because the wires on the Hacker A-60-7S-V2 are about 12-14 guage wire (too small and it needs to be changed) and the Castle 80HV wires are about 8-10 guage. Matching or converting the bullet connectors was not entertaining and soldering them would only create a higher resistance point the solder joint.
I have had no issues with the setup so far. Just check the screws once in a while, Preventive maintenance goes a long way in this hobby.
Any question, let me know.
bholsten