●This product is ordered by the lot. Purchase unit: 100 pieces; Easy to work just by pushing a pin; No wood screws or plugs are required, and can be removed without any rust; Mounting distribution boards, saddle bands, lighting fixtures, attaching shakles, signs, etc.; Outer diameter: 0.1 inches (4 mm); Length: 1.0 inches (25 mm); Maximum mounting thickness: 0.3 inches (8 mm); Perforation depth: 1.0 inches (25 mm); Bottom hole diameter: 0 inches (4.0 mm); Tensile load (2 mm). 1.0 Head Shape: Saras; Boxed; Body: Nylon; Screws: Steel