Description: Concrete Nails,Website:://.xinyuannails.com, diamond point. Specification: 13#, 16#, 20#, 25#, 30#, 35#, 40#, 50#, 60#, 70#, 80#, 90#, 100#, 130# Diameter: 1.60mm-5.50mm Length: 13mm-130mm Normal Size: 3.1mmx1" 3.1mmx1-1/4"  3.6mmx1-1/2" 3.6mmx2" 4.2mmx2-1/2"  4.5mmx3" 4.5mmx4"Shank: Grooved/ smoothFinish: Bright and E. Galvanized/ black zinc coated Packing: 50Lbs/carton, or 25kgs/ctn, 100/200/250/500/100pcs/box, or according to your requirement