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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Ampper Brass Battery Terminal Connectors, Top Post Battery Terminals Connector Battery Cable Ends for Marine Car Boat RV Vehicles (1 Pair)

Ampper Brass Battery Terminal Connectors, Top Post Battery Terminals Connector Battery Cable Ends for Marine Car Boat RV Vehicles (1 Pair)

Product ID: 228580791

Details

Color
1 Set
Connector Type
Top Post
Contact Material
Brass
Insulation Material
Non-Insulated
Terminal
Post Terminal

⚡Standard top post fit (19mm+/17mm-)

🔩Brass construction for durability

🛠️Tool-free, no-mod install

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฿1263

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Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Ampper Brass Terminals: Power Up with Precision & Durability!

ECO FRIENDLY DURABLE CHOICE - Lead-free brass construction offers a greener, more reliable alternative that resists corrosion even in harsh marine environments.
EFFORTLESS SETUP ZERO HASSLE - Flange nuts and direct-fit design make installation quick and tool-friendly—get connected in minutes, not hours.
CORROSION RESISTANT BRASS POWER - Premium brass terminals ensure long-lasting strength and superior conductivity, outlasting typical lead clamps.
VERSATILE MARINE VEHICLE READY - Engineered for cars, boats, RVs, and more—ideal for battery extension, parallel, and ground connections.
PRECISION FIT FOR SEAMLESS INSTALLATION - Designed for standard 19mm positive and 17mm negative posts, guaranteeing a perfect, no-modification fit every time.

Ampper Brass Battery Terminal Connectors are a high-quality, corrosion-resistant pair of top post terminals crafted from durable brass. Designed for standard 19mm positive and 17mm negative battery posts, they offer a direct-fit, no-modification installation ideal for cars, boats, RVs, and marine applications. These terminals provide superior conductivity and longevity compared to traditional lead clamps, making them a reliable and eco-friendly choice for battery extension, parallel, and ground connections.

Specifications

ASIN	B0882PCBDC
Best Sellers Rank	#12,218 in Automotive ( See Top 100 in Automotive ) #31 in Automotive Replacement Battery Terminals & Ends
Brand Name	Ampper
Color	1 Set
Connector Gender	Male
Connector Type	Top Post Battery Terminal
Contact Material	Brass
Customer Reviews	4.5 4.5 out of 5 stars (1,279)
Insulation Material Type	Non-Insulated
Item Dimensions L x W x H	4"L x 0.6"W x 2.5"H
Item Weight	4 Ounces
Manufacturer	Ampper
Material Type	Brass
Maximum Voltage	12 Volts
Model	Am-CBT0805
Number of Items	1
Part Number	Am-CBT0805
Terminal	Post Terminal
Unit Count	1.0 Count

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