a rubber tip with double-sided tape is the object. oh yes I forgot to say that there sony wrote on this item and that it changes everything-it seems! Amazon sold it to me 21 euros and I find it quite expensive ... Currently the price rose to almost 29 euros that say ..? This is a useful accessory because it is true that the handling of my DSC-RX100III without it is not very good. I think the manufacturer should be aware of this weakness and ergonomics at the price or is sold the unit should now provide it in the box. In conclusion: very useful as it significantly improves the grip, too expensive because Sony took the opportunity to pluck us ...