Torx Bits Vs. Star Bits: What's the difference? October 04 2018

Many people searching for a Torx bit set come across star bit sets.

So what's the difference? 

Torx is a licensed product and requires manufacturers to follow their part prints. We feel that our Chapman star bits are an improvement on the official Torx bits. The working end of our star bits are precision machined to fit Torx screws, but the shank of the bits have the signature Chapman length and knurled end.

We used to purchase Torx bits from a licensed manufacturer and finish them with our signature ear stops, ball detent and stamped number. However, we thought we could do better than the quality of the purchased parts, and they did not match the rest of our bits in length or features. 

We decided to manufacture our own star bits and improve on the licensed Torx bits.  The working end that fits into the Torx screw is precision milled and the bits match our standard length of just over 1" with ball detent to hold it into our tools. They also feature our signature knurled end for delicate finger tightening. We improved on the ear stops with a strong ring stop that keeps the bit in place in our famous midget ratchet

Our star bits can be found in many of our sets including Master Set #5575, #5589 Ultimate Gunsmithing Set and Star sets #6810 and #1068

To answer the question, Chapman star bits fit Torx screws just as well as Torx bits, but are an overall improved design!

Name  Inch pt. to pt. Approx. Working Torque Approx. Breaking Torque
S6 / T6 .066" 5" lbs 6.5" lbs
S8 / T8 .090" 12 16
S10 / T10 .107" 20 45
S15 / T15 .128" 34 68
S20 / T20 .151" 56 108
S25 / T25 .173" 84 168
S27 / T27 .195" 119 200
S30 / T30 .216" 166 200
S40 / T40 .260" 200