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TX Keys — 3909BL series specs & sizes

A single L-shaped ball point TX key made from chrome molybdenum steel. Sizes, lengths and weights in American units.

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Written by David Crosbie

A single L-shaped ball point TX key made from chrome molybdenum steel.

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Features

  • Manufactured in chrome molybdenum steel for added strength

  • Ball point end on the long key end giving access at angles up to 25°

  • Ideal for use in confined spaces

  • Regular hex end on the short arm giving the ability to apply higher torque

  • Individually marked for size for easier identification of the right size wrench

Sizes & specifications

Part no.

Size

Length

Weight

Docs

Availability

TX8

3.1" (80 mm)

0.2 oz (7 g)

In store

TX9

3.3" (83 mm)

0.2 oz (7 g)

In store

TX10

3.4" (86 mm)

0.3 oz (8 g)

In store

TX15

3.5" (90 mm)

0.4 oz (10 g)

In store

TX20

3.7" (95 mm)

0.4 oz (12 g)

In store

TX25

3.9" (100 mm)

0.6 oz (17 g)

In store

TX27

4.1" (105 mm)

0.7 oz (19 g)

In store

TX30

4.5" (114 mm)

1.0 oz (27 g)

In store

TX40

4.9" (124 mm)

1.4 oz (39 g)

In store

Dimensions shown in inches with millimeters in parentheses — figures come straight from the official Teng Tools product data. Docs links open the official Teng Tools PDF data sheet, user manual or parts diagram for that part number.

Also included in these sets

Availability & help

Items marked “In store” are stocked at tengtoolsusa.com and ship from our Fort Worth, Texas warehouse. For anything marked “Ask us”, contact us — we can usually get it. Every Teng Tools hand tool carries our lifetime warranty against manufacturing defects.

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