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The Digga XT25 Inner Extension (XT25IH series) adds depth to A6/RC6 class auger bits using a 2-1/2" hex interface — available in 4-foot, 6-foot, and 8-foot lengths. Allows drilling beyond the standard 60" A6/RC6 OAL without purchasing longer bits. Made in Dyersville, Iowa, USA.
| Specification | Value |
|---|---|
| Series | XT25IH |
| Hub | 2-1/2" hex |
| Lengths | 4ft, 6ft, 8ft |
| For Bits | A6, RC6 (2-1/2" hex hub bits) |
| Origin | Made in Dyersville, Iowa, USA |
2-1/2" hex interface. For A6 and RC6 series auger bits. NOT for 2" hex A4/RC4 bits or 100mm square RC10/RC11 bits. Confirm your bit hub before ordering.
For 4.5-15T excavators using A6/RC6 bits:
| Caterpillar | Komatsu | Volvo | Doosan |
| John Deere | Hitachi | Kubota | Yanmar |
Match to your A6/RC6 bit and drive unit hub.
|
Q: What bits use XT25 extensions?
A6 Earth Auger Bits and RC6 Rock/Combo Auger Bits — both with 2-1/2" hex hub. |
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Q: XT25 vs XO20IH (2" hex)?
XT25 is 2-1/2" hex for A6/RC6 class. XO20IH is 2" hex for A4/RC4 class. Select based on your bit series. |
|
Q: Can I stack extensions?
Yes — multiple XT25 extensions can be stacked. Contact eSkidSteer for maximum stacking recommendations for your drive. |
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Q: How much depth does each add?
The extension adds its listed length to the bit OAL. 4ft extension = 4ft more depth, etc. |
|
Q: Drive compatibility?
XT25 extensions connect between the excavator drive output and the A6/RC6 bit. Drive output must be 2-1/2" hex. Contact eskidsteer.com. |
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