LincolnIndustrial G905 Large 4-Way Grease Fitting Tool

The thread on the "tap" end seems fine for 1/8 NPT. The easy-out end seems fine.The two 12 point sockets are junk. One is too small for the hex on a 1/8 NPT Zerk, and the other is just large enough to strip out the hex on a 1/8 NPT Zerk. I gave it one star for the "tap" (it is not a tap, it is a chase) and the easy-out.Image, one expects that a tool designed to work with a 1/8 NPT would work with an 1/8 NPT. Threads seem right, how did you miss the hex TWICE? SAE is SAE, and all the dimensions for SAE are standardized - have been since before WWII. Why is there even two different sizes of hex-driver on this thing? Designer just hoping?Fix the size of the one driver, and put a 3/8" ratchet-socket on the other end - seeing as you have to use something to drive it anyways. I could have simply bought a 1/8" NPT tap and an easy-out - seeing as I have to have a wrench or socket anyways...Really, REALLY tired of glaring incompetence. Suppose Lincoln's engineers even know what the Machinery's Handbook is? How do you actually miss SAE dimensions TWICE?Whatever - dismiss a machinist's review and go home to cuddle your participation ribbons.

I'm cheating again since this is the same as the smaller one. This is not a fancy tool that makes the Top 10 Tools in the World chart. It does however work wonders for those that deal with grease fittings still. It's simple a must have if things go wrong with a grease fitting or part that uses one. Threads easily, extracts broken pieces in a flash and makes installing and tightening simple as heck. Lincoln sells good quality tools and the price is good for that level of quality!

Must have for any real mechanic

Just got it and it's now a part of my zerk fitting tool box (ok it''s actually an old cigar box re-tasked) Havent actually used it yet and will update later! Seems like a quality part. Never been disappointed with Lincoln lubrication stuff.

Works great.

Hard to say something bad about something so simple that does a great job. Grease nipples (I am an old guy who uses older non-political terms) need replacing when the little ball get stuck open/closed. This tool does a great job in the tight places where the manufactures place the fittings. I keep two in the box just incase I loose one as they are that handy.

If you work on any farm or construction equipment you are going to find broken grease fittings, these will save many hours of frustration trying to fix them. Extract, re-tap, replace, all with these little gems .

Good tool