Check the listing for details. 1-5/8" Copper Bopper: flint knapping tools, flintknapping, billet. Listed at 30.00 USD. Excellent performance! The best billet for the money, but will not hold up to miss-use and abuse. A favorite tool of the majority of today's knappers. Copper Boppers have a "weight forward" feel that provides accuracy and a fast swing. These billets have helped knappers reach new plateau in thinning, they are forgiving to error, but, like a tire, they will eventually wear out. The better knapper you are, the longer they will last. If you are in search of a more durable bopper check out our solid head copper boppers located in our ebay store. This 1 5/8" bopper can hold up to very heavy bi-facing with out "head loosening". Constructed with a contoured hard wood handle coated with rubber for a positive grip! Applications: * Heavy trimming * Rock hunting * Large Bi-facing Tool Weight: 12 Oz. Free Priority Mail Shipping! Check out our other flint knapping supplies in our Ebay Store!