I have purchased and installed several of these. All have worked. I bought some white and some yellow depending on what they connected with. Punched down easily. I highly recommend using a puck under it as you punch.
I thought I would get a real 6P6C RJ12 jack for some house phone lines. In spite of the text description and the picture in the product listing, what I received is a flimsy 8pin cat3 rj45 jack. As other reviews say, it is huge -- 23mm wide, compared to the 18mm width of the cat6 jack #5384. I would return the 3 of them if it wouldn't cost much to ship them back. Very disappointed.
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June 16, 2017
RJ-12 Phone Jacks - good to go
These jacks were exactly as expected and worked greate for my phone install.