I just receive it !!! For now it seems quality, I will leave a new comment when I have tried ... I ordered along another reference from the same seller (Barlow lens BA1 Seben (2x) 31,7mm (1.25 ") Barlow lens BA1 Seben (2x) 31,7mm (1.25 ")), it is important not to buy: Any plastic ... For a few euros more it seems largely better ...