Do these have any lead in them and where are they made?

I think I purchased these battery terminal approx a year ago for use on my 31 hp Yanmar tractor and I did take a look at them approx a month ago and they still looked brand new. I do not know if they have any lead in them. They appear to be all brass with the exception of the clamp fasteners and the post and it's fastener. I am happy with the connectors I received and they seemed to be better quality than the similar connectors I've seen in "big box" stores

can the stud to contact the battery cable be removed and/or replaced?

Yes, the "stud" is just a normal hex bolt. In fact there is nothing holding the hex part of the bolt from dropping by gravity. But the hex part is inside a hex slot so no need to have 2 tools to tighten it. Note also the stud size is 10mm so be sure your cable lug size is big enough. The nut's size should be compatible with the 5/16" stud nut so no need for another size socket to tighten the cable.

Is the stud made of steel or is it stainless steel?

I don’t think they are stainless. Zinc plated mild steel probably. I’ve had these on my truck for over two years and they still look like new. Very happy and would buy again. Hope this helps.

Is the negative terminal opening smaller than the positive?

Yes, because the battery negative post is small than battery positive post.

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⚡ Power Up Your Ride with Ampper’s Brass Battery Terminals!

HEAVY DUTY STRENGTH - Engineered to withstand marine and RV environments, these clamps deliver reliable performance where it matters most.
VERSATILE CONNECTIVITY - Ideal for battery extensions, parallel setups, and grounding, empowering you to customize your power system with confidence.
EFFORTLESS INSTALLATION - No modifications needed—direct fit design lets you upgrade your battery connections in minutes, hassle-free.
UNIVERSAL COMPATIBILITY - Fits standard 19mm positive and 17mm negative top post batteries—perfect for cars, RVs, boats, and more.
CORROSION RESISTANT BRASS - Premium brass terminals ensure long-lasting durability and superior conductivity, keeping your connections flawless.

Ampper’s Brass Battery Terminal Connector Set offers a robust, corrosion-resistant solution for 12V top post batteries. Designed for quick, tool-free installation, these heavy-duty clamps fit standard positive and negative posts on cars, RVs, and boats. Perfect for enhancing battery extensions, parallel connections, and grounding, this pair ensures reliable, long-lasting electrical performance in demanding environments.

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The delivery time was excellent, and the packaging was secure.

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Manufacturer	Ampper
Brand	Ampper
Model	Am-CBT0805
Product Dimensions	10.16 x 1.52 x 6.35 cm; 113.4 g
Item model number	Am-CBT0805
Is Discontinued By Manufacturer	No
Special Features	Brass construction, Fits cars, vehicles, RVs, and boats, For top post batteries, Increases strength and reduces corrosion, Used for car battery systems
Item Dimensions L x W x H	10.2 x 1.5 x 6.4 cm
Voltage	12 Volts
Color	1 set
Item Weight	113 g

Ampper Brass Battery Terminal Connector, Top Post Battery Terminal Clamp Set for Marine Boat RV Vehicle (1 Pair)

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