Bull Pins & Punches Bull Pin Tools & Punches You can never have too many bull pin and punches lying around. For riveting or connecting of steel with smooth and clean results, these tools are a must-have for any steelworker. The bull pins tools will help steel structures line up, facilitating the fitting of any connecting bolts or rivets, while the punches will help create or expand the hole when necessary. Each item is manufactured from quality steel and is built to last. Browse through our bull pins and punches to keep your steel lined up, clean and easy!