One of the most favorite gags you see in DID scenes, this cleave gag have the same UV than the OTN and OTM gags so you can use the 7 material options you already have from the OTN Gag (It's on the product's folder already), plus a new white one that you can use in the three of them.
The gag has 2 bones,8 morphs, you will get a piece of cloth too so you can put into the character's mouth,
and you will get two morphs for your Genesis 8 Female called "GJ - Cleave Gagged" and "CG - Gagged with Cleave Gag and Cloth" that will add more realism and show how does the mouth look with a cleave gag.
https://www.renderhub.com/grapejuice3d/cleave-gag-for-genesis-8-female