The only way to firmly secure residential cables to wooden studs is with Romex?N brand staples! These metal staples are manufactured from carbon steel to provide strength and reliability. Romex?N brand staples are engineered with recessed heads to protect cable jackets, sharper tips for easier starting and are practically oil-free for cleaner handling. Romex?N brand staples are available in 1/2" and 9/16" width sizes and are designed to a contractor-preferred length to accommodate varying cable size ranges. These metal staples are intended to be driven into wood with a hammer. For securing 14-3, 12-3 & 10-3 NM Cable Also works with: Armored Cable 14-2 ?Ai 10-3, Metal Clad 14-2 ?Ai 10-3 and Underground Feeder 14-3 & 12-3