Components used in vacuum grabber

I am an engineering student, and I was interested in creating a vacuum gripper system similar to that found on the uArm. The biggest difference for what I want to create would be that I want two suction cups. Would it be possible to get a parts list of the components used in the uArm vacuum gripper system?

I found a kit here: uArm Vaccunm Gripper System Kit - Seeed Studio

but I would prefer building it all myself instead of just modifying it since that’s all part of the fun.

So you need these:
1, 6V pump
2, 6V valve
3, Silicon tube
4, Pump&valve driver : made by hand

I am mostly interested in knowing where I could find the suction cup holder used. It looks like they have a switch on it to determine when the cup is fully depressed.

Actually we made it ourselves. Well,I still have several, if you want I can send you for free.

That would be very appreciated. Send me a private message, and we can exchange contact information.

I also Interest in this kit. But isnt available!
Did you know a seller?