Genius Tools Star Bit Socket T-40 Size 3/8 Inch Drive 220mm Extra Long Durable Design - 308+6840
- Genius Tools 308+6840 is a T-40 star bit socket with a 3/8 inch drive for matching compatible hand tool setups.
- T-40 star bit profile engages matching star fasteners securely, helping reduce slippage during removal or installation.
- Extra-long 220mm overall length provides added reach for recessed, obstructed, or hard-to-access fasteners.
- 3/8 inch drive fits common ratchets and torque tools, making it easy to integrate into existing socket systems.
- High speed steel construction supports strength, durability, and anti-corrosive resistance, while stamped size markings simplify quick identification.
Also Available in Other Sizes (50) Same tool, different size Show all 50 sizes Hide sizes
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Size T-10 · Length 50mm
$5.69
-
Size T-10 · Length 110mm
$9.78
-
Size T-10 · Length 140mm
$10.58
-
Size T-10 · Length 180mm
$14.02
-
Size T-10 · Length 220mm
$15.84
-
Size T-15 · Length 50mm
$5.69
-
Size T-15 · Length 110mm
$9.78
-
Size T-15 · Length 140mm
$12.17
-
Size T-15 · Length 180mm
$14.02
-
Size T-15 · Length 220mm
$13.77
-
Size T-20 · Length 50mm
$6.54
-
Size T-20 · Length 110mm
$9.78
-
Size T-20 · Length 140mm
$10.58
-
Size T-20 · Length 180mm
$14.02
-
Size T-20 · Length 220mm
$13.77
-
Size T-25 · Length 50mm
$6.54
-
Size T-25 · Length 110mm
$9.78
-
Size T-25 · Length 140mm
$10.58
-
Size T-25 · Length 180mm
$12.19
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Size T-25 · Length 220mm
$13.77
-
Size T-27 · Length 50mm
$5.69
-
Size T-27 · Length 110mm
$9.78
-
Size T-27 · Length 140mm
$10.58
-
Size T-27 · Length 180mm
$12.19
-
Size T-27 · Length 220mm
$13.77
-
Size T-30 · Length 50mm
$6.54
-
Size T-30 · Length 110mm
$11.25
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Size T-30 · Length 140mm
$10.58
-
Size T-30 · Length 180mm
$12.19
-
Size T-30 · Length 220mm
$15.84
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Size T-35 · Length 50mm
$6.19
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Size T-40 · Length 50mm
$7.63
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Size T-40 · Length 110mm
$13.15
-
Size T-40 · Length 140mm
$14.19
-
Size T-40 · Length 180mm
$14.21
-
Size T-45 · Length 50mm
$8.72
-
Size T-45 · Length 110mm
$14.19
-
Size T-45 · Length 140mm
$14.67
-
Size T-45 · Length 180mm
$17.01
-
Size T-45 · Length 220mm
$22.23
-
Size T-50 · Length 50mm
$7.59
-
Size T-50 · Length 110mm
$12.34
-
Size T-50 · Length 140mm
$14.67
-
Size T-50 · Length 180mm
$17.01
-
Size T-50 · Length 220mm
$19.33
-
Size T-55 · Length 50mm
$11.25
-
Size T-55 · Length 110mm
$15.60
-
Size T-55 · Length 140mm
$20.27
-
Size T-55 · Length 180mm
$26.00
-
Size T-55 · Length 220mm
$24.92
Genius Tools Star Bit Socket T-40 Size 3/8 Inch Drive 220mm Extra Long Durable Design - 308+6840 Professional Star Bit Socket
This professional star bit socket is built for precise engagement with T-40 star fasteners while offering extra-long reach for access in recessed or obstructed areas. The 3/8 inch drive format supports common ratchets and torque tools used in professional hand tool setups.
Made from high speed steel for strength and durability, it also features anti-corrosive properties to help resist rust in demanding shop environments. Size markings are stamped for quick identification and consistent tool organization.
Key Benefits
- T-40 star bit socket profile delivers secure fit and reduced fastener slippage.
- 3/8 inch drive size fits common ratchets, extensions, and torque setups.
- Extra-long 220mm overall length reaches fasteners in tight or recessed areas.
- High speed steel construction supports high strength and long service life.
- Anti-corrosive properties help resist rust and maintain reliable performance over time.
- Stamped size markings provide permanent, fast identification for better tool organization.
- Meets or exceeds ANSI standards for professional-grade fit and consistency.
Designed for professional technicians, this socket balances reach, durability, and dependable fastener grip. The bit is securely attached yet interchangeable, supporting long-term use across repeated service tasks. Backed by the Genius Tools Limited Lifetime Warranty against manufacturer defects for added confidence in daily shop work.
| Brand | Genius Tools |
|---|---|
| Material | HSS |
| Size | T-40 |
| Drive Size | 3/8" |
| Length | 220mm |
| Type | Star Bit Sockets |
| Sizing System | Star |
| Socket Style | Bit Socket |
