I too like SB175 connectors I have standardized on them for everything that uses high current DC power. LiFePO4 power packs, winch, 2000 watt power inverter all use them. I bought a bag of 10 of them before the winch and power inverter build plus I made SB175 jumper cables so most of those 10 are gone.
Let me know what you want for them.
You may be able to ship them all first class mail, which tops out at 13 ounces.
I plan to add more SB175 connectors to make DC power supplies interconnectable and make a 2 gauge SB175 extension cord or 2.
This little rig needs one too because it has a big battery that could be used to run the 2000 watt inverter or to jump start.
http://ecorenovator.org/forum/solar-...-hybrid-2.html
I had a small 120 volt craftsman AC only stick welder that I bought and it was alright, but knew it could be better with some work, so I cut off the cheap welding leads and put welding lead receptacles on it so I could use any of the welding leads I already had made for my other machines, ducted the fan, rewired it to run the fan with the transformer off and put a more awesome flanged L6-30 plug on the machine and power factor corrected it so it didn't flip a 20 amp breaker as much. Then it could weld substantially longer with out over heating and with out flipping a 20 amp breaker as often.
Then I converted it to DC with some rectifiers and scrap yard inductors.
It worked even better as a DC welder.
Then all I had to do to make it into a tig was plug a tig torch into it and hook up to argon.
Bottom of page 3:
Eco mod my welder - Page 3 - EcoRenovator
I don't have a picture of the fanged receptacle on there but I will add one.