Features: Ensures secure hold with our M6/8/10/12 Expansion Bolts, designs to provide high strength support for various materials, making concrete anchors for construction and projects. Crafted from carbon steel, these fully threaded expansion bolts boast rustproof and sturdy, ensuring durability and long time use for both indoor and outdoor applications. For professional builders, home renovations enthusiasts, and experts, these ground anchors bolts offer versatility and ease of use in any project requiring sturdy fastening solution. For securing large equipment such as air conditioners, water heaters, and brackets, these expansion bolts fasteners for any easy installation task. With convenient 10 pack, you'll have the flexibility to tackle both small scale and large scale projects efficiently, ensuring you always have tool on hand for any job. Specifications: Component: Carbon Steel Type: As Picture Show, Four Type to Choose Size: 4.2cm/1.65inch, 4.8cm/1.88inch, 5.8cm/2.28inch, 7cm/2.76inch Package Includes: 10pcs Expansion Bolts note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.