Tungsten Ergonomic Bucking Bar Click HERE for more information! RIVET LONGER: tungsten rivet block absorbs more vibration than steel, reducing fatigue from bucking rivets. ERGONOMIC: save your hands! Tungsten reduces wrist strain and helps prevent long term health issues. COMPACT: fits into smaller spaces than a steel bar, easily working with those hard-to-reach rivets. QUALITY: these long-lasting rust-resistant bars result in less kickback leading to a cleaner, higher quality rivet.