Bolts are NOT included in the listing.  10/32 button heads are available at nearly any hardware store.

This is a C.D.S helmet mount compatible with gopro helmet cameras.  This mount is precision machined out of aircraft grade aluminum.  100% made in the USA. This mount can be securely bolted to either flat or curved surfaces due to its design.  Two stainless steel button head bolts are supplied with the mount.  Longer bolts may be needed for your specific application.  Longer bolts are available at nearly any hardware store. These mounts have been tested by fighter pilots pulling "G"s and Professional raft guides in the bottom of the Grand Canyon running massive rapids.  

Disclaimer:

We have no control as to how or what you mount this to.  We do not recommend drilling holes in your helmet.  If you do so, it is at your own risk.