Strong penetration: The concrete nail can pierce a 3mm steel plate in just 0.1 seconds. Five gears allow power adjustment, with significantly different power output across gears, enabling customization based on various construction requirements. High-quality material with improved small head design: This concrete nail features an updated small head design, compatible with 16-slot, 20-slot, and row-slot tools. Made from reinforced and thickened alloy steel using advanced manufacturing techniques, it ensures a durable service life of over 100,000 uses, with reduced risk of cracking and low failure rate. Widely used: This manual portable nailer is suitable for concrete walls, camera mounting, electrical box installation, plumbing and electrical work, air conditioning mounting, hanging picture frames, pipeline fixing, and wire fastening. Easy to operate: This manual concrete nailer requires no power source. Simple to use in five steps: 1. Wear protective glasses, gloves, and ear protection; 2. Select the appropriate nail; 3. Position the tool vertically at the work area; 4. Apply vertical force to drive the nail; 5. Hold the muffler cover and compress multiple times if needed. In case of malfunction, clear any debris before continuing. The package includes 100 circular nails. When using wall fastening tools, always wear ear protection, eye protection, and gloves. Color: Silver Material: Metal Package Contents: 100 x Steel Nail Fastening Tool Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting and display differences may cause slight color variations between the product image and the actual item. Measurement may vary by +/- 1-3 cm.