Deformation-resistant design: Our metal heels feature a tapered design with thin front ring openings for easier nailing into wood. The reinforced impact ensures that the nails are not easily deformed. Anti-slip thread: The center is designed with an anti-slip thread. Once installed, our wedges firmly grip the wood and do not slide off easily during use. Quality materials: Our metal heels are made of high-quality steel. They effectively support a variety of wood structures and provide secure installation without loosening or falling off over time. Multifunctional compatibility: This metal wedge is suitable for hammers, axes, sleds, and other wooden handle tools, making it a versatile addition to any toolbox. 3 universal sizes included: The set includes three different sizes, 8mm (0.31 inches), 10mm (0.39 inches), and 12mm (0.47 inches) in diameter, to meet various needs from small to large hammers. Color: Silver Material: Metal Package contents: 21 x Hammer handle wedges Note: Light reflection and different displays may cause the color of the item in the picture to vary slightly from the actual product. Measurement may vary by +/- 1-3cm.