1-3/4" x 9-1/2" Simpson CHMXBT17509 SDS-MAX Bushing Tool Box Nails - Annular Ring Shank #3 square drive – Includes

#3 square drive – Includes driver bit in each box (replacement bit model BIT3S)

HVAC ductwork assembly

The self-drilling point eliminates the need for predrilling in most metal-to-metal applications

creating an incredibly strong bond that can tolerate high temperatures

these screws withstand harsh outdoor environments

1-3/4" x 9-1/2" Simpson CHMXBT17509 SDS-MAX Bushing Tool Box Nails - Annular Ring Shank #3 square drive – IncludesThe Simpson Strong Tie CHMXBT17509 bushing tool is a one piece tool designed for concrete and asphalt surface roughening. This tool is made of toughened steel and has gone through a specialized tempering process to create a hardened surface that is wear resistant. The special surface treatment improves performance and extends the life of the tool.