K201 Comprehensive Spark Plug Socket Set with Locking Extensions, 3/8-Inch Drive, 9-Piece

I think this set has a socket for every size of spark plug made . It also has 3 3/8" locking tip type extensions of assorted lengths to get you into deeper spark plug holes . I had a plug get stuck down in a hole because I did not have any of these locking tip extensions before I bought this set . A review I read on Amazon before I bought these warned that the the tiny set screws that hold the knurled end on each socket on come loose easily . He was dead right . I luckily caught mine before it got lost forever and put it back in with some thread lock . I really had barely used that socket before it backed way out. The set screw took the smallest star drive I have ever seem. Luckily I had one , but that is only because I am a tool fanatic . HEY MANUFACTURER , YOU NEED TO FIX THIS PROBLEM, SORRY I DON'T SPEAK MANDARIN ... Anyway these locking tips can save you some grief, or cause you some if you loose the damned screws ! Otherwise this set seems well made and come in a nice plastic box . Will see if the size markings on each socket hold up . Not sure if they are etched . I f not I will engrave the size on each . Or the manufacturer could . What a concept !

this same set off a snap-on tool truck runs $438.00. This is a great little set to make the job easier

Every size I need

Bought this to change plugs on my 2013 Kia Soul.Plug socket did not grip the plug well enough to easily remove it. Took 5 minutes of fiddling to finally get a good enough grip that i could gingerly pull it out.If these got a tighter grip on the plug, it'd be outstanding, but it proved to not be any better than a standard socket.

I bought this set for the diversity of socket sizes and the locking mechanisms on the extensions and sockets.Right away I used the 18mm to change plugs in my motorcycle. The plug wells are deep and narrow so to extension and the thin wall so let were perfect. They eliminated all concern of the plug falling out of the socket and back down into the plug well.Nice quality as well.

Used it only once so far, it helped with my job and I'd recommend the purchase.

Found as a good price. Much needed for easier spark plug removal.

This looked very promising. With the variety of sockets, it has the value of use for many different vehicles & applications. The problem is the retention system is too fragile.I bought this set specifically to change the plugs in my Mazda 3 which requires a 14mm socket. Testing it a couple of times on one of the new plugs, the socket seemed to work fine & hold the plug securely. Other manufacturer's sockets use a rubber grommet or magnet to hold the spark plug in place. KAIFNT uses spring clips on the interior of the socket to hold the spark plug in place during removal & install.I removed all 4 original plugs using the KAIFNT 14mm socket & it worked great. Unfortunately, after the install of the first plug, the socket would no longer retain / hold a spark plug in place. For whatever reason, the spring clips on the 14mm socket were no longer working & it wasn’t obvious what had caused them to fail. For the install of spark plug #2 I dropped it into the hole/recess & then placed the socket over it. While setting #2 in place I realized I could use the 9/16 socket for plugs #3 & #4 & it worked fine for completing the job.I’m frustrated that after being used less than a dozen times the 14mm socket was unable to retain the spark plug. I intend to return & replace with sockets that use a magnet for retention. I spent over 30 minutes trying to find a way to contact KAIFNT, but was unable to find warranty contact information on the packaging, the web, or Amazon’s product page. Lesson learned: make sure you can easily find a contact number for any product that advertises having a warranty before purchase. (My apologies if I’ve missed something obvious. I’ll update this review if I learn that’s the case).The sockets & extensions are well made. The locking feature on the extensions are a must have - to some degree I hate to return the set due to the quality of the locking extensions, but can't justify the cost for 2 extensions. There’s no locking function on the universal joint which could cause an issue - (the same issue you’re trying to avoid by using a locking extension to begin with).In short, the spring clip retention system doesn’t deliver (at least not for me) & I would recommend looking at other products.