Deacero 7432 Heavy Duty Staple Barbed, Bright, 1-3/4"Highlights: Size : 1 3 4" Finish : Bright Type : Heavy duty Wire size : 9 Ga Shank type : Barbed Standards : FFN105B approved Usage : For wood posts and bars support on farm fencing Black or heavy duty galvanized Smooth, barbed, lock or netting staple finish Extra sharp and with holding points U and V staple designs WARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth