(Vettec Hoof Care) Bovi-Bond Block Adhesive is a fast-setting urethane adhesive used when blocking the hooves of lame cattle. Bovi-Bond adheres a wood or rubber block to the bovine hoof. Fast and easy application. Sets up in just 30 seconds and is weight bearing in 2-3 minutes. No fumes or odors. Requires dispensing gun, mixing tips, and hoof blocks (each sold separately).