PRODUCT APPLICATIONSThis metal expansion bolt is suitable for concrete walls, hollow walls, brick walls, stucco walls, and wood walls. Perfect for hallways, bathrooms, kitchens, and garages, this is suitable for hanging big picture frames, TVs, artwork, accessories, shelving, and mirrors.PRODUCT DETAILS INCLUDES Material: Carbon Steel Finish: Galvanized Color: Silver Tone Overall Size: 10 x 38 mm/0.39 x 1.5 inches(Diameter × Height) Package Includes: 50-Pack M8 x 38 Drywall AnchorsPRODUCT ADVANTAGES1. Our drywall anchors are made of steel with zinc-plated, anti-corrosion, and anti-oxidation features. Built to last, they provide reliable long-term performance even in demanding environments2. Designed to expand during installation, these wall anchors create a firm, wide grip inside wall surfaces, providing strong bearing capacity for heavy fixtures while preventing pull-outs or loosening over timeINSTALLATIONMetal anchor bolts are easy to use. First, drill a hole matching the diameter of the anchor. Insert the anchor into the wall plug, then tighten the screwthis will cause the wall plug to expand. The serrated design ensures a more secure fit in the wall, eliminating concerns about the screw loosening or falling out.