Package Included: Narrow Crown Nails 1000pcs Material: Steel ;Please choose the product that suits your needs. 4mm nail length approximately: 0.15 inch6mm 0.23inch8mm0.3inch10mm0.39inch12mm0.47inch14mm0.55inch Package Included: Narrow Crown Nails 1000pcs 100% brand new and high quality Direct Fit,Easy installation,and Simple operation Made of high quality material,durable and practical to use.