Material: Metal Size: A:0.4*2cm / 0.16"*0.78" B:0.4*2.5cm / 0.16"*0.98" C:0.5*2.5cm / 0.20"*0.98" D:0.6*2.5cm / 0.23"*0.98" Color: Silvery 1. Made of high-quality carbon steel, suitable for various outdoor environments, effectively preventing rust and corrosion. 2. Unique petal design nut, easy installation and strong stability, ensuring that the wall fixings are firm and not loose for a long time. 3. The hollow tube structure is matched with expansion screws to provide stronger grip and bearing capacity, suitable for a variety of wall materials. 4. The back bolt combination design is flexible and adjustable, and is widely used in outdoor decoration, fence installation and heavy equipment fixing scenes. Notes: 1. We all know that different computers display different colors, and the color of the actual product may be slightly different from the following pictures. 2. Please allow slight differences in size due to different manual measurements. Thank you for your understanding Package includes: a set of screws (30pcs)