I haven't used these yet so I cant vouch for how good they are. They are flush fitting like my other ones (that I am still using) so the nozzle / hot end, can travel over them without touching them, and just like the other ones they attach over the original heat bed bolts so it makes fitting easy. Just print em, stick em on, get 4 new nuts. no need to take the bed nuts off.
Quick and easy
UPDATE: I am currently using these and they are really great!
Why are these different?
These are designed to offset the bed by 3mm to give a little bit more clearance at the back of the extruder and made to hold the glass and prevent it from sliding under vibration.
Sometimes printed parts stick to the glass bed really tightly and removing them can cause the glass plate to move out of place causing bed leveling problems. Vibration and movement while a print is in progress can also shift the glass plate causing the print to have variation in layer lines if there is any play.
The FreeCAD files are included so you can modify them should they be guff.