Flat-head hammer with square handle: 150x35mm or 5.91x1.38 inches Flat-head hammer with hexagonal handle: 180x35mm or 7.09x1.38 inches Flat-head hammer with square handle: 85x35mm or 3.35x1.38 inches Flat-head hammer with round handle: 85x35mm or 3.35x1.38 inches Seam-fitting performance: This seam-fitting machine's hammer head has excellent seam-fitting capabilities, enabling rapid and tight seam-fitting operations in various projects. Its unique design and craftsmanship ensure precise force application during operation, significantly improving work efficiency and helping projects be completed on time and with high quality. High-quality material construction: It is made of 40CR chromium steel and undergoes overall processing. The combination of this material and craftsmanship gives the hammer head high strength and excellent wear resistance, ensuring stable performance even under long-term, high-intensity working conditions, and prolonging the lifespan of the hammer head. Wide applicability: The flat hammer head design makes it suitable for a wide range of applications, whether it is hammering screws and nails, processing white iron flat edges, or local leveling work. At the same time, it is compatible with square-handle two-power drills and hexagonal-handle small electric picks, meeting the usage needs of different tools. Professional application scenarios: It is mainly used in chimney projects, building outdoor facilities, warm air ventilation projects, and industrial ventilation systems. In these professional fields, the hammer head can leverage its advantages, providing reliable guarantees for the smooth implementation of projects, ensuring aesthetically pleasing and firmly-sealed seam-fitting results. Exquisite one-piece molding process: Using the original material one-piece molding technology, there is no welding or seams, ensuring the overall structural strength and stability of the hammer head. This process not only enhances the durability of the hammer head but also makes it safer and more reliable during use, reducing the risk of faults caused by structural issues. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.