Will these work on my terminals for boat batteries?

Yes, as long as it is a top post battery. Be sure to check size of opening on the terminal you plan on buying. The bigger the battery, the bigger the terminal on the battery. Hope this helps.

I see the video of the negative not tightening. I have the same problem. What have others done to make it tight?

Hello, you can use 2 x Adjustable Spacers. I used the Spacers that came with it. It’s a-tight fit using the Spacers.

What is the block made of? looks like aluminum. what is the hardware made of? is it coated or solid brass ?

the hardware made of Nickel plated. Protective cover made of plastic. they d ok have a great connection and show a very good accurate reading on the volt metter.

My battery has one cable, but this terminal has two holes?

SUNMORN Battery Terminal Connectors, 0/2/4/6/8 AWG Inputs, Battery Terminal, Battery Post Terminals, Positive Negative For Car RV Truck Marine Boat

Do you get both postive and negative terminals?

If your car Both original + and - lead battery terminals were shot with frayed and broken wires, you did not have to replaced the entire cable assemblies.

ASIN	B07QZRKXSL
Best Sellers Rank	#88,682 in Automotive ( See Top 100 in Automotive ) #164 in Car Battery Terminals
Brand Name	SUNMORN
Color	Silver
Colour	Silver
Connector Type	clamp
Connector type	clamp
Contact Material	Nickel
Contact material	Nickel
Customer Reviews	4.5 out of 5 stars 4,291 Reviews
Included Components	battery terminal connectors battery terminals
Insulation Material Type	Copper
Insulation material	Copper
Item Dimensions L x W x H	5.8L x 4.6W x 1.8H centimeters
Item Weight	9 g
Manufacturer	SUNMORN
Material	Nickel
Material Type	Nickel
Maximum Voltage	12 Volts (DC)
Model	SUNMORN Battery Terminal Connectors
Specification Met	CE
Stud Size	#2
Terminal	Screw Terminal
UPC	733205028660
Unit Count	1.0 Count

Battery Terminal Connectors, 0/2/4/6/8 AWG Battery Terminals, Heavy Duty Car Battery Terminal, Top Post Multiple Battery Terminal, with Shims Protector Cover

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