Ko-Ken KO2771 Universal Joint, 1/4 in drive, 31 mm
Available
Ko-Ken 2770, 2771, 3770, 3771, 6770 and 8770 are universal joints with square drives of 1/4 in, 3/8 in, 3/4 in and 1 in. (manufacturer-stated)
Lengths are 31 to 143 mm. (manufacturer-stated)
Each model is listed in the table below with its specifications.
Where this product is used
- Working at an angle to the fastener where a straight drive will not reach
- Reaching fasteners offset from the handle in confined engine bays and machinery
- Maintenance and repair work with square drive sockets
Features
- Square drives: 1/4 in, 3/8 in, 3/4 in and 1 in (manufacturer-stated)
Key specifications
| Model | Drive | Length | Dimension D | Weight |
|---|---|---|---|---|
| KO2771 | 1/4 in (manufacturer-stated) | 31 mm (manufacturer-stated) | 12.7 mm (manufacturer-stated) | 20 g (manufacturer-stated) |
| KO2770 | 1/4 in (manufacturer-stated) | 33 mm (manufacturer-stated) | 13 mm (manufacturer-stated) | 20 g (manufacturer-stated) |
| KO3771 | 3/8 in (manufacturer-stated) | 43 mm (manufacturer-stated) | 18 mm (manufacturer-stated) | 46 g (manufacturer-stated) |
| KO3770 | 3/8 in (manufacturer-stated) | 50 mm (manufacturer-stated) | 19 mm (manufacturer-stated) | 66 g (manufacturer-stated) |
| KO6770 | 3/4 in (manufacturer-stated) | 105 mm (manufacturer-stated) | 36 mm (manufacturer-stated) | 500 g (manufacturer-stated) |
| KO8770 | 1 in (manufacturer-stated) | 143 mm (manufacturer-stated) | 48 mm (manufacturer-stated) | 1,170 g (manufacturer-stated) |
Drive sizes, lengths and weights are manufacturer-stated (Ko-ken catalogue 2025-26).
Selecting the right option
Match the square drive to your sockets and handle.
Related products
Related Ko-Ken products: Ko-Ken 2772Z, 3772Z and 4772Z Z-Series Universal Double Joint, 1/4, 3/8 and 1/2 in Drive, Ko-Ken 2771Z, 3771Z and 4771Z Z-Series Universal Joint, 1/4, 3/8 and 1/2 in Drive, Ko-Ken 14770 to 18770 Impact Universal Joint, 1/2, 3/4, 1 and 1-1/2 in Drive and Ko-Ken 2760, 3760, 4760, 6760 and 8760 Extension Bar, 1/4, 3/8, 1/2, 3/4 and 1 in Drive.
Resources
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1" / 143
Model Number: KO8770
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1/4" / 31
Model Number: KO2771
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1/4" / 33
Model Number: KO2770
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3/4" / 105
Model Number: KO6770
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3/8" / 43
Model Number: KO3771
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3/8" / 50
Model Number: KO3770
