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Stanley 85-721 3/8-Inch Drive 6-Point Professional Grade Spark Plug Socket Set, 3-Piece Description:

• Amazon Sales Rank: #3448 in Home Improvement
• Brand: Stanley
• Model: 85-721

Features

• Stanley Sockets feature our Max-Drive design, a unique radius corner design which provides 15-Percent more torque, making it easy to tighten fasteners and simplifies the turning of rounded corners
• Helps reduce fastener wear without contact on outer 5-Percent of fastener, so fasteners last longer
• Helps reduce slippage on frozen or rusted fasteners
• Limited Lifetime Warranty

Customer Reviews:

Great for getting out frozen spark plugs!
This is a great little spark plug socket set, and includes the three most common sizes, 5/8″, 3/4″, and 13/16″.

I have several socket sets of various sizes (and costs), some big, and some little. For some reason, every one of them includes only one size spark plug socket, 5/8″.

Recently I’ve noticed that my small power tools, like my chainsaw, trimmer, and leaf blower are getting really hard to start. So, I decide to replace the spark plugs on them, and that’s when I discover that all of the spark plugs are 3/4″, much too large to work with my 5/8″ sockets.

I tried the little free socket wrench that comes with most of the power tools, and it bends without taking out the plug. I guess that’s what happens when you wait several years between changing the plugs. Oops!

So I go in search of the right size, and I find that most sets include two sizes: 5/8″ and 13/16″. Every size but the one I need, of course!

Imagine my surprise when I run across this little beauty. It includes all three sizes, and holds the socket on the walls instead of the corners (which prevents the plug from rounding off). The little plastic case they come in is handy for storage and can hang on a pegboard hook, so you’ll be able to find them when you need them.

Very nice little solution to a vexing problem. Reasonably priced, too. Just try not to wait as long as I did before changing the plugs!

Sean P. Logue, 2008

Love these sockets
These are high quality spark plug sockets in the three most popular standard sizes (5/8″, 3/4″, and 13/16″). They are made of Chromium Vanadium (Cr-V) and have a polish chrome finish. The rubber lining inside grabs onto the ceramic portion of the spark plug tightly, and it protects it from damaging the plug. It also keeps the socket vertical while you are loosening or tightening the plug. I highly recommend these to anyone looking for high quality 3/8″ drive spark plug sockets. The picture on Amazon is wrong. The largest size, the 13/16″ one, looks like a 12 point socket in the picture, but it’s not. All three of them are six point sockets.

From the Manufacturer
The Stanley 85-721 3 Piece 3/8-Inch Drive 6-Point Professional Grade Spark Plug Socket Set features our Max-Drive design, a unique radius corner design which provides 15% more torque, making it easy to tighten fasteners and simplifies the turning of rounded corners. Helps reduce fastener wear without contact on outer 5% of fastener, so fasteners last longer. Helps reduce slippage on frozen or rusted fasteners.