Skip to content

T-20 X 1" Tamper Proof Star Insert Bit 1/4" hex - 10 Pack

Original price $7.99 - Original price $7.99
Original price
$7.99 - $7.99
Current price $7.99

Product Specification


Benchmark Abrasives T-20 X 1" Tamper Proof Star 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 feature a post in the center of the recess. The post in the insert bit will only fit into tamper-resistant TORX bits. They are used in a hex bit screwdriver or wrench to insert or remove star insert security screws.

Star Insert Bits for Tamper Resistant are engineered for maximum durability and long life with impact drivers. These star insert bits are designed with precision tip geometry so they fit fasteners more precisely, which reduces stripping. The precision geometry of these bit delivers superior fitment, and reduce cam-out. The hole in the center in each star insert bit causes it to be tamper-resistant. It can be used in automobiles, repairs, engines, motorcycles, interiors, dashboards, computers, cable boxes, toys, appliances, and consumer electronics. 

Quantity: 10 pieces


  • Overall Length – 1”
  • Bit type – Star “Tamper Proof” (tamper-resistant)
  • Head Size – T-20 
  • 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.


Not happy with your product? Welcome to hassle free returns. Just shoot us an email, call the toll free number or click the chat button below. One of our helpful employees will get you set up with an RGA and return shipping info.

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare