Originally Posted by
Knitette
Be careful! I bought DAFA blades from eBay UK and despite stating that they would fit my Fiskars cutter - they didn't. They made my cutter seem as if it had a flat tyre..............
My Fiskars cutter's hole is a perfect circle, whereas Olfa and other blade centres are fluted. Perhaps your is different. The seller did, however, refund my money. Happy quilting.

Thanks for the heads up. Sometimes they show the same picture for all brands so given your information I will ask before purchase.
Thanks to everyone who has replied for sharing your experiences!