Diablo #1 Robertson square drive bit for high-torque fastening with reduced cam-out and slippage compared to Phillips. 2-pack blister card for use with cordless and corded drill/drivers and impact drivers.

• Drive size: #1 square (Robertson)
• Bit length: 1"
• Quantity: 2-pack blister card
• 1/4" hex shank fits quick-change chucks, drill chucks, and impact drivers
• Torque-resistant tip geometry resists cam-out under load
• Heat-treated steel core for impact resistance and durability
• Rust-resistant coating for extended service life
• Laser-engraved size marking for quick identification
• Designed for high-torque cordless and corded drivers

Tip: Match the square drive size to the screw recess - #1 square drive fits #4-#7 screws. Apply firm axial pressure to keep the bit fully seated and prevent recess wear.