I have a sandblaster.
That's a plastic holder and it clamps sanding paper special for this thingy.
I have 60,80,120, 180, and 400
The good thing of this sandpaper is that you can wash it, rince it under the tap with water and let it dry a bit.
Then you can use it over and over again.
I think i used my first pad for almost a year... and i sand a lot.
Pads are about 10 euro for 2 pieces, but the money more then worth it.
I buy it here in Belgium in the local DIY shop.
Greetings Glenn.