Features: Special expansion screws suitable for water heaters and air conditioners, with a quantity of 10pcs, for easy installation and fixing of equipment. Made of steel material, rust resistant, wear-resistant, durable and reliable. Tight thread designs to prevent loosening; Moderate length, suitable for installation on various devices. Suitable for household users, maintenance engineers, and electrical installation personnel. It can be used for the installation and fixation of water heaters and air conditioners, ensuring stable and reliable equipment and providing a comfortable user experience. Specifications: Material: Steel Style: 100 Long/120 Long Size: As Shown In The Picture Package Includes: 10pcs Expansion Screw Bolts note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.