High-concerned chemical: None is_customized: Yes Length: 16mm-100mm Model Number: TWQ041 Type: Decorative Nail DIY Supplies: Woodworking Material: Steel Origin: Mainland China Certification: None Wood Nails – Material: Carbon Steel – Size: 1.1x16mm, 1.2x20mm, 1.5x30mm, 2.2x40mm, 2.5x50mm, 3.1x70mm, 3.4x80mm, 4.1x100mm (diameter x length) – Suitable for nail heads embedded in wood, furnitures, soft materials, etc. – Not fits for metal, concrete and other hard materials.