SUNEX Tools 3/8 in. Drive 5/16 in. 6-Point Male Pipe Plug Socket, CR-MO Steel, Model 310PC

Good quality, worked perfectly to remove pipe plug from engine block

1987 Jeep wrangler that nasty odd drain screw on the transfer case. Found and old extension and used a grinder and finally made a fitting to fit. The very next day we used this on my buddies Jeep and bam off check and change . Perfect fit

Worked good to remove 3/8 pipe plug from side of Case engine block for installation of a block heater.

As an owner of a 2001 Ford F-250 with the 7.3 Powerstroke diesel, I was extremely curious as to whether my truck was equipped with the sturdier forged rods found in the OBS trucks and the 1999/2000s, or if I had the more brittle powdered metal rods used on the 2002/2003 trucks. Now they say you should be able to tell which ones you have based on your engines serial #, but enough sources have proven this method as being less than 100 percent reliable/accurate, so all that was left was for me to take a look with my own two peepers. Which brought me to the inspection port.. Upon first glance at the square shaped opening, I was sure that in my many a'toolboxes and jars that I would have some type of attachment or socket wrench or material that I would be able to wedge in there and make do.. But I was wrong. Way wrong! It didn't matter how much loosening spray or how hard I hammered an item into the opening or how tightly I squeezed on pliers trying to hold said item, it wouldn't budge! Which brought me to this bad boy! Let me tell you, the ease of which I was able to open port using this tool was flat out embarrassing after all the effort I had put into everything else. It was a piece of cake! Wish I had just done it right from the start! (For the record, I had forged rods. Score!)

This is a perfect socket for when motor gets redone and have to pull a weird size

Worked the oil galley plugs in my Pontiac 400. I couldn't reach one (not the hidden plug) though due to the square bit being too short. Wish it was longer.

We needed this as we could not find anyone that carries it locally including auto & plumbing suppliers. The projected arrival date was into the next week. We ordered it and it arrived 2 days later. Fantastic. Unfortunately the oil galley plugs on our Dakota has a 5/16 square drive pipe plug. As mentioned hard to find a socket for. We had tried to grind down a 3/8 square to 5/16 and while it fit it broke off when we used a breaker bar on it. This part fit perfectly and was strong enough to allow us to use a breaker bar and tap it to hear that clink when it broke loose. It worked on all 3 plugs with no issues.

Must have this in your toolbox specially marked just for GM vehicles to remove the plugs on the oil filter adaptor to get to the T40 bolts. Worked perfect and is hard to find in local stores.

Très bon produit

Needed to remove a stubborn engine oil gallery plug. Much better than a DIY tool. Excellent quality like most Taiwan exports.

fit square hole properly

This little guy worked great for the seized drain plug in my Jeep 4.0ltr

Got today and used to pull 2 of 3 pipe plugs from a 70 Pontiac block. Worked like a charm. Pretty tough little socket.