Nuova Simonelli Bottomless Portafilter with 21g Basket - 98050037 From  £43.08

Excellent, not the same as victoria arduino , bottomless portalfilter, but the stainless steel is so good, italian standard, The price is 25% of the original but the quality is 80%. It will last long as the genuine, worth tthe money
Note : Nov 2021 , I cannot find the original from the arduino company. So I choose the second choice from the one made in Italy.
So much recommended.
The shipment to worldwide is not charged over price as many eebsite.