The MILWAUKEE 1" Insulated Cable Staples are used for fastening electrical cables to wood surfaces during the electrical rough-in process. Only compatible with MILWAUKEE M12 Cable Stapler (2448). UL/CUL approved for single or double stacked 14-2, 14-3, 12-2, 12-3, 10-2, 10-3 (single only) NM-B cable installation. Also suitable for use with low voltage cables such as CAT3, CAT5, CAT6, and Coax. Each package includes 600 staples. Milwaukee 1" Insulated Cable Staples (Box of 600) MNM1-600