I did did not notice that my 2016 ultra tacks 7.5D had 263 SB holders till after I bought the 272 tuuk edge holders ( my 2014 tacks 7.5D had size 271 ) & brought them to my skate guy. I did hear on here , that you can go up a size. the guy working at the skate shop said , he didn't install holders , but the guy that did would be in soon. left the skates // holders there & he said they would call me if there was a problem . got a call 2 hr's later , skates were done , no problem. didn't ask if he had to drill new holes. Worked great. should not be a problem.