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The Hyundai DURAWING 365 is a Concentric Overburden System designed for casing of 425 mm diameter holes through varying formations into bed rock.
The wing bits are enclosed making them the most professional & efficient system on the market today as they are not exposed to "clogging" in loose overburden material while drilling down to the bedrock.
When the drilling starts, the bit wings protude utilising a unique cam sliding mechanism. The key feature of the DURAWING 365 is the self actuating wing bit system that works perfectly everytime.


Drilled Hole Diameter: 425mm

Casing Size O/D: 409.6mm

I/D: 387.4mm 


Major Body Diameter: 386mm

Length: 940.5mm

System Open: 425mm

Casing Size: 409.6 / 387.4mm

Total Weight (approx): 389kg

Wing Retracted: 363mm

Hammer Type: QL120,  SD12 

Casing Drill Bit - Durawing SUS365

SKU: Durawing Bit SUS365
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