Features: Versatile Quantity Options: This drywall drive anchors kit comes in convenient packs of 20/50/100pcs, offering flexibility for small repairs or large-scale installations, ensuring you always have the right amount on hand for any project. Durable & Corrosion-Resistant: Made from high-manganese steel with a color zinc plating, these drive anchors are rust-proof and built to last, providing reliable strength for drywall and plasterboard installations. No Pre-Drilling Required: Designed for effortless installation, these self-driving drywall anchors eliminate the need for pre-drilling, saving time and effort while ensuring a secure hold in plasterboard. Strong & Reliable Grip: With a 1.37-inch length, these steel drive anchors offer superior load-bearing capacity, ideal for mounting shelves, mirrors, or heavy decor without compromising stability. All-in-One Installation Kit: The zinc-plated drive anchors provide a complete drywall installation solution, combining rust resistance, easy self-driving design, and durability for hassle-free DIY or professional use. Specifications: Material: Carbon Steel Length: 3-3.5cm Include: Choice 1: 20pcs * Drywall Drive Anchors or Choice 2: 50pcs * Drywall Drive Anchors or Choice 3: 100pcs * Drywall Drive Anchors