Original LEGO Parts:
If you get your Kit with “Original LEGO Parts”, you will, just as the name suggests, get New Original LEGO pieces, that gets sourced out, hand picked by the suppliers and after that, hand sorted for each Kit, by BricksBlocks&MOCs. To then be signed, sealed and delivered, to you!
Webrick is an alternative, LEGO compatible, brick supplier, that delivers parts which are close to Original LEGO bricks.
If you choose this option, your Kit will be delivered with mostly Webrick parts. And pieces they can’t supply, will be replaced with New Original LEGO ones (for example a few types of wheels & rims).
The parts for each Kit, will be hand picked by Webrick and after that, hand sorted again, by BricksBlocks&MOCs. To then be signed, sealed and delivered, to you!