Crafted with advanced materials, the self-drilling anchors feature 2025-upgraded galvanized steel, with a golden expansion pipe coated in yellow zinc for enhanced oxidation resistance. The threaded plastic anchors, composed of hard nylon plastic reinforced with high-strength glass fiber, offer exceptional firmness, wear resistance, and aging resistance. Paired with heavy-duty steel screws, the kit guarantees sturdy, rust-proof fixing. Installation is straightforward and non-destructive. Without the need for pre-drilling, simply tap the expansion nails into the wall, attach the object, and tighten the screws. The deep thread design ensures a secure grip, providing robust fixation and pull-out resistance. Once items are removed, the anchors can remain in place for future use, eliminating the need for additional holes. All components are neatly organized in a plastic box for easy storage and access. The kit includes 110 steel wall anchors (0.47 x 1.18 in./12 x 30 mm), 90 steel wall anchors (0.47 x 1.57 in./12 x 40 mm), 20 plastic sheetrock anchors, 20 carbon steel wall anchors, 240 zinc screws in 5 sizes, and a 50 mm cross-groove drill bit.