SECURE INSULATION: Heavy-duty staples ensure safe and secure insulation of various cables, including NM (Romex) cable gauges 14/2, 14/2G, 12/2, 12/2G, 10/2, and 10/2G VERSATILE APPLICATION: Staples designed to secure flat and round Voice, Data, Video, and NM (Romex) nonmetallic sheathed cable EXCLUSIVE COMPATIBILITY: Compatible with Klein Tools' Loose Cable Staplers (Cat. Nos. 450-01 and 450-100) for convenient and efficient stapling INSULATED DESIGN: UL listed insulated staples with plastic insulation provide protection for cables MADE IN USA: Staples are proudly made in the USA, ensuring high-quality craftsmanship ENHANCED HOLDING POWER: Special coating on staples increases their holding power for added security PACK OF 300: Each pack includes 300 staples, providing ample supply for cable installation projects