Strong penetration: The concrete nail for concrete nails can pierce a 3mm steel plate in just 0.1 seconds in . Five gears can adjust power, and different gears have significantly different power effects. It can be adjusted according to different construction strength requirements. High quality material with improved small head design: This concrete nail adopts the latest small head design and is suitable for 16 slots, 20 slots, and row slots. Reinforced and thickened alloy steel needles are manufactured by high-quality industries and use special technology to a long service life of over 100000 times, less prone to cracking and low losses. Widely used: This manual portable nail is suitable for concrete walls, camera installation, electric box installation, water and power installation, air conditioning installation and hanging image frames, pipeline installation, wire binding, etc. Easy to operate: This concrete nail is powered manually. Easy to use, with only five simple steps: 1. Wear protective glasses, gloves, and earplugs; 2. Choose a nail; 3. Vertical nail in the workplace, ready to ; 4. Vertical force entering the wall; 5. Hold the muffler cover and compress multiple times. If malfunction occurs, please remove any residue before attempting a few nails. The software package includes 100pcs circular nails. When using wall fixing tools, please wear earplugs, eye masks, and gloves. Colour:silver Material:Metal Package Contents: 100 x Steel Nail Fastening Tool Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.