Multi Color Light Blue Light Purple Titanium Nose Hoop Ring Ball End Straight Nostril Hoop Ring Hoop 22G 6mm Diameter 22 Gauge Pin

Diameter on menu means color

Material: All but the pink one are titanium over Stainless steel (stainless steel does not tarnish). The pink is Stainless steel (stainless steel does not tarnish) with acrylic pink.
Gauge: 22
Diameter: 6mm
So many prefer this style for a hoop because it's easier to put in. The ball on the end is attached and provides support to add pressure making the post stay in.