Thanks to everyone for replying. That's exactly what I needed to know. There's nothing wrong with the holders, no cracks, and they are well fixed to the boot, no loose rivets. Thanks.
Looking to replace the blades in my old Bauer Supreme 8000 skates but the Tuuk lightspeed holders won't accept any of the new blades available so looking at costly replacement of holders, unless I can find some old stock that will fit the original holders - Tuuk lightspeed '1'. Do blades for LS2 holders fit?