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#1 x 1" Square Insert Bit 1/4" hex - 10 Pack

Original price $5.99 - Original price $5.99
Original price
$5.99 - $5.99
Current price $5.99

Product Specification


Benchmark Abrasives #1 x 1" Square Insert Bit 1/4" hex are CNC machine ground out of heat-treated S2 Shock resistant tool steel, which will withstand extremely high torque output and provide maximum durability.  They are widely used on electric screwdrivers, hand screwdrivers, cordless drills, etc.

Square bits are also known as Robertson bits. The tip geometry of the Square Insert Bits reduces wear and creates an ideal fit with every fastener. This square insert bit is used in mortising machines or drill presses. They are used in hand drivers or with a bit adapter in power tools. It features a unique torsion zone to deliver long life in both metal and wood fastening applications. They are engineered with heavy-duty, cold-forged, high-grade steel to withstand high torque output and are built for maximum durability and long life with impact drivers. 

Quantity: 10 pieces


  • Overall Length – 1”
  • Bit type – Square
  • Head Size – #1 
  • Shank Diameter – 1/4” hex

Machines Used On:

  • Electric powered rotary drills and chuck adapters.  Can be used on impact drivers with the accompanying adapter

Safety Tips/techniques:

  • If you don’t find your desired size or tip, there are more sizes available.  Email for special quotes.
  • Always wear proper PPE to include (but not limited to) safety glasses, hearing protection, respirator, and hand protection.  Keep all guards in place on your machine.



You read that right, Free shipping on orders over $100 + Orders placed before 12 noon PST = SHIP SAME DAY! Orders placed after noon will ship the following day.

Standard FREE shipping is UPS Ground or USPS priority depending on size and weight. Most customers receive their order within 3-5 days from date of purchase. Faster shipping options available for additional charge. Free shipping not available on international orders. Free shipping will only be available to orders being delivered within the lower 48 states.


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