The DeWalt 1" Insulated Cable Staples (Pack of 540) (DRS18100) are designed for use in the DEWALT DCN701 Cordless Cable Stapler. They are UL listed (406A) for common Romex (NM Sheathed Cable), and MC (Metal Clad) cable applications. The staple crown is plastic insulated and these fasteners adhere to the National Electrical Code. These staples can also be driven manually using a hammer for tight space applications.