Where is it made? I don't want anything from China. Thanks

The made in china version is more accurate. But you get made in USA tax with subpar QC. Great choice

What's the diameter of this?

CTA Tools 3235 Ramp-Type Spark plug Gapper had a diameter of 38.0mm.

I see the "gap opener" on the tool but how do you close the gap if needed? Thanks.

It is designed to gap, other methods must be utilized to close the gap.

Is there a warranty? Purchased a year ago it’s already splitting falling apart.

Yes, please provide purchase info to Amazon.

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Description

⚡ Gap it right, drive with might!

UNIVERSAL FIT FOR EVERY VEHICLE - Designed to work seamlessly with any vehicle, making it the go-to tool for professional mechanics and DIY enthusiasts alike.
BUILT TO LAST WITH RUGGED ALLOY STEEL - Crafted from professional-grade alloy steel for unmatched durability and resilience in any automotive environment.
COMPACT LIGHTWEIGHT FOR ON THE GO USE - At just 0.01 ounces and 1x1x1 inch, it fits perfectly in your toolkit without weighing you down.
HAND POWERED PRECISION WITHOUT BATTERIES - No need for power sources—this tool delivers reliable, consistent results anytime, anywhere.
PRECISION ENGINEERING FOR PEAK PERFORMANCE - Accurately measures spark plug gaps from 0.02 to 0.1 inches (0.5 to 2.5 mm) ensuring optimal engine efficiency.

The CTA Tools 3235 Spark Plug Gapper is a professional-grade, heavy-duty alloy steel tool designed to precisely measure spark plug gaps from 0.02 to 0.1 inches (0.5 to 2.5 mm). Compact and lightweight, it fits any vehicle and operates hand-powered for reliable, on-the-spot adjustments, making it an essential addition to every automotive toolkit.

Specifications

Brand	CTA Tools
Core Material	Alloy Steel
Thread Size	M14
Top Material Type	Alloy Steel
Vehicle Service Type	Any Vehicle
Global Trade Identification Number	00053001032358
Automotive Fit Type	Vehicle Specific Fit
UPC	053001032358
Manufacturer	CTA Tools
Part Number	3235
Item Weight	0.01 ounces
Product Dimensions	1 x 1 x 1 inches
Item model number	3235
Is Discontinued By Manufacturer	No
Size	One Size
Color	Multi
Style	Spark Plug Gapper
Finish	No
Material	Yes
Power Source	Hand Powered
Item Package Quantity	1
Number of Handles	1
Measurement System	Metric
Included Components	Includes: 1 x CTA Tools 3235 Ramp-Type Spark Plug Gapper, Original Version
Batteries Included?	No
Batteries Required?	No
Warranty Description	Warranty

Reviews

V**

Great to have on hand

Nice and small sized gap tester. Functions well and fast. Good quality and nice to keep on your keyring just in case. Very simple to use.

5.07.2025

G**D

Works Great but you might want more

This is great for adjusting the gap but the shim tool is more accurate for checking the gap after it's done. I got both tools since gapping is pretty important. See below

7.09.2025

T**R

Gap ya plugs

Works great doesn’t feel cheap like the ones you’d get from AutoZone. Good value for the money. Not super fond of the cancer warning I guess dont chew on it.Would recommend

1.09.2025

P**E

Seems to work, but I'm not very confident

I'd never used one of these before, and honestly it felt a little imprecise. I wish I had a pair of calipers handy to verify the gap size. But so far my vehicle has been running fine.One of my kids ended up putting a string on it and wearing it like a necklace because he thought it looked cool.

22.04.2025

D**S

Good off brand replacement

Better the. Autozone keychain gapper. Better quality metal

9.09.2025

D**.

Best Gapper out there!

This is excellent quality gapper smooth and well made, easy to read,easy to gap spark plugs with. This is not the cheap crap you find at auto parts stores! I would buy another one but this will probably outlast me! Hahaha

31.08.2025

A**F

Perfect spark plug gapper.

Over the years, I've had several "coin" spark plug gaping tools. This one is exceptional, for two reasons. First, the lettering and numbers are detailed in black, which makes them easier to see (and cooler looking). Secondly, it's gap settings are spot dead on! I checked them with a micrometer and they are perfect. Nice going CTA Manufacturing Corp. (made in America). Oh and did I mention the price?

20.08.2025

M**X

Great tool

Old school design, made in USA, love it

18.09.2025

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