Drill-free installation Case pack automatic door closer for drill-free doors white sensor wire design <ul class="a-un0rdered-list a-vertical a-spacing-mini"> <li class="a-spacing-mini"><span class="a-list-item">Package Contents and Premium Materials: This offer includes two punch-free door closers with sturdy steel cables and four self-adhesive hooks. The automatic door closers are made of refined ABS plastic, which is resistant to oxidation, corrosion, and high temperatures. This ensures a long lifespan and rugged construction, ready to withstand everyday demands. </span></li> <li class="a-spacing-mini"><span class="a-list-item">Superior Tensile Strength: Equipped with a high-quality, double-steel wire rope with a diameter of 1.2 mm, this product has been repeatedly tested to ensure it's break-resistant. Having withstood 20,000 stretching and rebound tests, its impressive tensile strength demonstrates its strength and quality. </span></li> <li class="a-spacing-mini"><span class="a-list-item">Easy to Use: No complicated installation procedures required! Simply remove the door closer, place the self-adhesive hook at the desired location, and let it sit for 24 hours to strengthen its stickiness. Then, simply secure the steel cable to the hook. For a more secure installation, we include screws. </span></li> <li class="a-spacing-mini"><span class="a-list-item">Function: The automatic door closer closes automatically, saving you money on heating and cooling. It can help you work and study efficiently without the unnecessary interruptions caused by constantly opening and closing the door. With its corrosion resistance, weather resistance, and quiet operation, it will be an ideal addition to any home or office. </span></li> <li class="a-spacing-mini"></li> </ul>