The Apex 440-1-ACR1 is a 1-inch long, size #1 Phillips insert bit featuring an ACR (Anti-Camout Rib) design. It utilises a 1/4-inch hex shank and is highly regarded in the aerospace and heavy manufacturing industries for preventing bit slippage and stripping fasteners.

• Drive size: 1/4" hex shank
• Point size: Philips #1
• Overall length: 1" (25mm)
• Bit style: ACR