Supabit Robertson R2 Screwdriver Bit 50mm 2 Pack

The Sutton Tools Supabit S148 is a 2 pack of Robertson R2 square recess screwdriver bits at 50mm long. The square recess tip has a slight taper that prevents cam-out and holds the screw more securely, and the magnetic tip keeps the screw on the bit while you position it. Supabit Extreme Impact bits are developed for the high torque output of an impact driver.

Key Features

• Square recess (Robertson) tip with a slight taper that prevents cam-out
• Slight taper holds the screw more securely in the bit
• Magnetic tip increases productivity at awkward angles and in tight spaces
• 3X torque: torque tested to exceed DIN standards by up to 330%
• 1/4 inch hex shank with power groove for impact drivers and quick change adapters
• Cold forged from premium shock resisting S2 tool steel at 58-62HRC
• Manganese Phosphate coating for hardness and corrosion resistance

Specifications

• Drive: Robertson (square recess) R2
• Length: 50mm
• Pack: 2 pieces
• Series: Supabit Extreme Impact
• Shank: 1/4 inch hex with power groove and retaining notch

Applications

• Driving Robertson (square drive) screws in timber and hardware
• Impact driving in framing, joinery and assembly work
• Reaching screws at awkward angles with the screw held on the bit
• General square drive fastening with an impact driver

What You Need To Complete The Job

Keep the hex H5 bits and a pack of PH2 Phillips bits for the other common drives, and add a magnetic nutsetter set for hex head screws. See the General Hand Tools range for more driving accessories.

Frequently Asked Questions

What is a Robertson screwdriver bit?

Robertson, also known as square recess, is a screw drive system with a square socket in the screw head. The square tip sits snugly in the screw and the slight taper prevents cam-out, which means the driver is less likely to slip out under load. It holds the screw more securely than a cross head on some jobs.

What does the taper do?

The slight taper on the square tip wedges into the screw head, which prevents cam-out and holds the screw more securely on the bit. That makes the bit easier to control, especially when driving at an angle or starting a screw one handed. It is one of the reasons Robertson bits are popular for fast assembly work.

Will this bit fit my impact driver?

Yes. The 1/4 inch hex shank with a power groove fits impact drivers and quick change adapters, and there is a retaining notch for bit holders and hand drivers. The Supabit Extreme Impact range is built for the high torque output of an impact driver.

What size screws does R2 fit?

R2 is the second size in the Robertson range and it is the common size for general square drive screws in timber and hardware. Match the R2 bit to the screw head so the square sits fully in the socket. For smaller or larger Robertson screws, use the matching R1 or R3 bit.