I wanted humbuckers with a cover because I was tired of my top E string catching underneath on the exposed bobbin top on my front pickup. I was going to just buy some new pickups with covers -but then I saw these and thought it worth a try. They work great -the width of the pole pieces is maybe just a fraction larger than my actual pickup, but it still fits and works a charm. My bridge humbuckers' pole pieces match up PERFECTLY with its cover, so as usual: measure well before you buy. They are maybe a little expensive, but its still cheaper than buying 2 new pickups with covers already fitted and then having to sell the two you have replaced.