These are replacement spare part - White Balls - Gel balls for the Scarab Knife GoPro Yi mount
Beware of clone-fakes which are rubber and will cause gello - these are custom made soft silicon PU gel spheres - you get what you pay for
Scarab Gel ball Size
Most damage cause to balls in a crash, are caused by poorly prepared carbon - make sure you use the correct diamond tool to dull down the knife edges of any hole to which a gel ball is fitted
These spheres are very strong but will be damaged by crash impact - if sharp objects, sharp carbon, sharp tools or finger nails cut them - such user damage is NOT covered by warranty.