Coil Roofing Nail 1,Diameter from 2.1mm to 3.33mm 2, ... from 25mm to 100mm. 3,Shape of the shank Coil Roofing Nail1,Material: Iron , steel2,Shank: Screw, Ring, Smooth.3,Diameter ... will reply asap!Welcome to our company for visiting! Coil Roofing Nail