Flint Knapping Bopper - Copper Cap Size:X-Large (1 3/8") Run them in your flex

Run them in your flex shaft

Chemical Composition: SiO2

When the fluid cooled the silica was deposited as gemmy chalcedony and quartz

Era: Cretaceous period

Flint Knapping Bopper - Copper Cap Size:X-Large (1 3/8") Run them in your flexDescription: Copper cap billets have been the go to for knappers for decades. The 7 8" Copper cap billet is designed for fine detail work. These lead filled billets give unmatched performance and accuracy when it's needed the most. While this line of billets provides great performance, they do wear over time. If you're looking for a billet line that is designed for heavy use check out our Solid Head Copper Billets. Made In: China Small Head Size: 21.