Got a bunch of these to use on my 75B mags. Much more comfortable grip for my big hands - especially after swapping the factory plastic grips on the 75B for full sized CZ rubber grips like on my SP-01 Tactical. Then noticed these also fit my Sig P226 40S&W mags with just a little fitting of the Sig plate and changed all of those as well. My guess is that they would fit any caliber P226 mag.

I thought these were rubber you slid over your existing base plate...They're Not! These are new base plates overmolded with thick rubber and are a good upgrade for magazines. Changing all my base plates out with these.

what a difference from the sharp thin steel base plate. Much more comfortable grip.

Just a better grip feeling(pinky grip) If you are looking to protect your mags this will do the job! I got 10rds mags for sp01 tac .40 and they fit perfectly, just love them!!

I shoot USPSA Production with a pre-B here in Arizona and initially I didn't have these base pads. Using MecGar mags, I couldn't see paying +30% for a bit of rubber. However the gravel ranges were denting the steel plates on the standard flush fitting mags and frequent reloads were scraping my palms on their sharp edges. About a year after I began competing I found a good deal on a set of mags which already had these base pads. They're a great improvement! I found myself loading all 10 of my mags the night before (5 with rubber pads, 5 without) but never pulling the stock mags out of my bag. I much preferred using the mags with these pads, even if it meant pausing to stuff more rounds in them. I've since purchased these pads for the remaining mags so they aren't sitting idle. I recommend adding one of these to your next order from CZ Custom if you use flush fitting mags. Its a $10 chance and you may also find yourself won over by the extra comfort. (Cosmetically they're nice too).