10pcs Black Acrylic Segment Rings
1/2" diameter - Select desired gauge from the drop-down menu

I am able to both remove and reinsert the segment in all sizes without tools, though I found the 0g to be a bit more difficult so some users may require assistance in the form of light pressure using a ring opener for that size (possibly even the 2g, but definitely not for the smaller sizes)

All items are brand new, never worn.