What is the amperage rating of this lug?

I don't know and couldn't find an amperage rating for these cable lugs. However, they are more than heavy enough to carry the amperage for any application that you would use 4/0 cable for. They are high quality cable lugs and not cheap junk. I have used them for everything from battery cables on my diesel Ford truck to cable ends on my 220V Lincoln welder without a single issue.

Are these copper lugs safe to use for 120v?

Yes. They are certified up to 600 Volts AC at 275 Degrees F.

what size is the opening to fit 2/0 awg wire. Chart says 11.7?? My cable meassures 15.2mm

Even if the chart say for 2/0 wire, I do not believe it can be use in that gane. I will use it in a #2 awg wire where it fits fine. Do not buy this item for a 2/0 wire.

I've got a one time use for these, is there a way to crimp them without a special tool? I hate to buy one and never use it again

could use a pair of pliers or channel locks. But it wont be as secure as using a $13 hammer lug crimper https://www.amazon.com/Mofeez-Hammer-Lug-Crimper-Tool/

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⚡ Power up your connections with pro-grade durability!

HEAVY DUTY COPPER POWER - 100% annealed copper lugs ensure peak current flow and corrosion resistance.
VERSATILE APPLICATION RANGE - Perfect for solar panels, marine, automotive, golf carts, and DIY electrical projects—engineered for professionals who demand reliability.
MOISTURE LEAK RESISTANT DESIGN - Closed-end terminals prevent solder leaks and protect connections from moisture and corrosion.
PRECISION FIT EASY INSTALLATION - 3/8" ring terminals with flared openings for effortless wire insertion and secure crimp or solder connections.
ULTIMATE PROTECTION WITH HEAT SHRINK - Includes 10 pcs 3:1 dual wall adhesive heat shrink tubing, UL & CSA certified for up to 600V and 257℉.

The TKDMR 10pcs 2/0 AWG 3/8" battery lugs set features 100% annealed copper terminals with corrosion-resistant treatment, paired with 10 high-quality 3:1 dual wall heat shrink tubes. Designed for heavy-duty electrical connections, these lugs offer easy wire insertion, moisture protection, and UL/CSA-certified heat shrink tubing rated for 600V and 257℉, making them ideal for automotive, marine, solar, and DIY applications.

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