is this for 4awg marine wire

yes but i don’t know about using in salt water but it works on my car

How wide is the M6 1/4" from edge to edge in mm? Thanks

1/4 inch = 6.35 MM . Just over 6MM I hope that is what you need .

Does this include glueless heatshrik?

It includes heat-shrink. Not sure if it's glueless. I just heated up and it shrunk to fit.

How many amps (amperage) can these carry at 12 volts?

I installed them on a vehicle with a 270 amp alternator. It's working just fine

Sanuke 1/0 Gauge -3/8(M10) Battery Cable Lugs, 0 Gauge Heavy Duty Copper Ring Terminals 10 Pack, Wire Lugs with 3:1 Heat Shrink Tubing(UL Listed), Battery Cable Ends for Marine, Solar, Automotive, RV

Product ID: 184845508

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Details

Color
Bare Copper
Connector Type
Ring
Contact Material
Copper
Insulation Material
Non-Insulated
Terminal
Ring Terminal

🔋100% annealed copper for max conductivity

🔥3:1 dual-wall heat shrink tubing, UL & CSA certified

🛠️Heavy-duty, corrosion-resistant & easy wire insertion

Description

⚡ Connect with Confidence — Power, Protection, Performance!

PLUG PLAY EFFICIENCY - Flared openings and pre-cut tubing sizes make installation fast and foolproof—perfect for pros and DIYers alike.
POWER UP WITH PURE COPPER - 100% annealed copper lugs deliver unbeatable current flow and durability for your high-demand electrical setups.
VERSATILITY MEETS RELIABILITY - Ideal for marine, solar, automotive, and home electrical projects—join the elite who trust Sanuke for flawless power delivery.
SEAL THE DEAL WITH HEAT SHRINK - 3:1 dual-wall heat shrink tubing offers superior insulation and moisture protection, certified for up to 600V and 257℉.
BUILT TO LAST BUILT TO PERFORM - Heavy-duty construction resists high temperatures and corrosion, ensuring reliable connections in any environment.

Sanuke’s 10-piece set of 1/0 AWG 3/8" battery lugs features premium 100% annealed copper terminals paired with UL & CSA certified 3:1 dual-wall heat shrink tubing. Designed for heavy-duty use, these corrosion-resistant lugs ensure maximum conductivity and secure, moisture-proof connections across marine, automotive, solar, and home electrical applications.

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