SUNEX TOOLS 310PC 3/8-Inch Drive 5/16-Inch Male Pipe Plug Socket

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

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

Feels like good quality

Exactly what I needed for installing electric fans

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.

This adapter worked great

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!)