Question about bauer runners

[Bcreid2 0]

I was wondering if size 272 LS4 runners will fit in a size 7.5 bauer apx2 with lightspeed edge runners? This may have been discussed in the past and i apologize if it has.  I have an extra pair of 272 LS4 blades but my sons skates are 7.5D

[mojo122 538]

7.5D should have 263mm steel.  272mm typically is size 8 and 8.5D.

Look at the bottom of the holder on the rear tower.  It will have the holder/runner size marked on it there.