roofing nail with umbrella head Size: 2'',2 1/2",3'',4" wire diameter : 8g , 9g , ... 10g ,11g ,12g galv galvanzied or hot -dip Roofing nails with umbrella head.Size: 2'' ,2 ... 1/2" ,3'',4"wire diameter : 8g , 9g ... plain shankpacking :1.. 20kg or 25kg per box 2. 5.5lb/box , 8box/carton 3. 3. ...