4 mm Star Bit Set with Rail, 12-Piece (T1-T20)

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$5.00

Set Includes:

START1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T15, T20 (12 sizes)
Bit Rail

Details Specs

Details

The tip of a tamper star 4 mm bit in a bit driver.

Precise Tip Geometry and Stamped Markings

Tekton 4 mm bits are made with tight tolerances for a secure fit in small screws, reducing slip and wear—crucial for high-value, sensitive electronics.

Close-up image showing the stamped markings on the bit.

The tip size and Tekton "T" are clearly stamped onto every bit.

Comparison between Tekton bit and Wiha bit after 48 hours in a saltwater solution. The Wiha bit has more corrosion.

Hardened Bits with Non-Flaking Protective Finish

The bits are made from hardened 8660 steel (55–58 HRC)* and finished with a zinc phosphate conversion coating that provides lasting corrosion resistance without altering dimensions or flaking, unlike chrome finishes.

* Line Head bits are made of hardened AISI 1015 steel (40 HRC)

Bit Rails Have a Soft, Secure Hold

The flexible rails securely grip the bits so they can’t fall out, while also making it easy to remove any bit one-handed. The rails can also stand upright on a flat surface, making the markings easier to see.

Close-up view of the markings on a Tekton 4 mm bit rail.

High-contrast size markings are printed on the top of the rail.

Specs

4 mm Star Bit Set with Rail, 12-Piece (T1-T20)

Country of Origin	Taiwan
Item Weight	0.08 lb.