Minimum hole: 3mm A pair of silver brass magic mushroom ear hangers..  They are medium size hoops measuring about 4cm across. They will fit in stretches of just 3mm and above. 

You can of course wear these in larger stretches. They are light, only about 13g each piece so they are not heavy enough to stop larger stretches shrinking so make sure to put your full size plugs back in every day. Or of course wear them through your tunnels.

This item does come as a pair.