Catch cup.

What you have on the left is a catch cup.

What makes it better than the on the right?

Easier to use, more manoeuvrable

Not with my arthritis and carpel tunnel it isn't. I can easily place this gently over the enclosure or palm it to make it easier for myself. I posted a video on the forum of a month ago showing an OBT transfer. Using this method. Worked pretty good then

I like the one on the right because you can unscrew the cap and poke it out if its being difficult. To each their own though, whatever works just dont use glass

@spodermin. I agree sir. However, the hole in the top is big enough to get a brush into. I only would use the left for pre juveniles.