I prefer the similar ones that have additional screw(s) that secure the straddle cable. The advantage is that you can then move the carrier to the side to center the brake pads. (On older brakes, the springs get funky and workhorse commuters sometimes lead less than pretty lives and don't always have properly dished wheels, straight forks ...) There are at least two versions with those screws. I got mine years ago and have no record or memory of the brands or suppliers My Mooney's been running a pair for the past 20 years or so with quite noticeably off-center carriers.. Used unknown history Shimano cantis that perform superbly despite the asymmetry. Rode the bike today. Never thought about the brakes other than the entire bike felt and worked just right. (Well, I did think about the rhino horn for a straddle cable catcher! See post above.)