We are the biggest nail manufacturer in CN. ISO9001,ISO14001, ASTM F1667, EG nail have salt spray test:over 60 hours

Spiral nails

size: 2"x12-1/2GA, 2-1/4"X11-1/2GA, 2-1/2"X10-1/2GA, 3"X9-3/4GA, 3-1/4"X9-3/4"GA, 4"X7GA

Length:50.8mm-101.64mm

Shank Diameter(mm):2.5mm-4.50mm

Finish:Bright and HD Galv .

Shank:Spiral Shank.

we can assure you that nails have good quality.

Welcome to inquiry.