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BIT 38 MM SR28(R28) for drifting ,tunneling and stone quarrying
$20.99Made from high alloy steel and tungsten carbide as same grade as internationally well-known brand
Apply “hot (thermal) -insertion” processing procedure to insert the buttons as same as internationally well-known brand
Entire CNC processing procedure ensure the quality consistency
Military grade requirements of heat-treatment guarantee durabilityFast penetration rates, and straight and clean hole quality. Long life of drilling holes.
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Q7-37-R25 Threaded Button Bit
- Code No.: Q7-37-R25
- Thread Type: R25
- Diameter: 38mm
- Length: 90mm
- Gauge Buttons: 9mm*5
- Front Buttons: 7mm*2
- Carbide Design: Semi-ballistic
- Skirt Design: Standard
- Weight: 0.51kg
- Water Holes: 1 on front, 1 on side
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Q7-38-R25 Threaded Button Bit
- Code No.: Q7-38-R25
- Thread Type: R25
- Diameter: 38mm
- Length: 90mm
- Gauge Buttons: 9mm*5
- Front Buttons: 7mm*2
- Carbide Design: Semi-ballistic
- Skirt Design: Standard
- Weight: 0.51kg
- Water Holes: 1 on front, 1 on side
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Q7-43-R28 Threaded Button Bit
- Code No.: Q7-41-R28
- Thread: R28
- Diameter: 43mm
- Gauge Buttons: 5*9.5mm
- Front Buttons: 2*8mm
- Skirt Design: Standard
- Weight: 0.68KG
- Carbide Design: Ballistic
- Face Design: flat
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Q9-R25-45button ballistic bit
- Code No.: Q9-R25-45
- Thread Type: R25
- Diameter: 38mm
- Length: 90mm
- Gauge Buttons: 10mm*6
- Front Buttons: 8mm*3
- Carbide Design: Semi-ballistic
- Skirt Design: Standard
- Weight: 0.51kg
- Water Holes: 1 on front, 1 on side
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R25-45mm Threaded Cross Bit
- Code No.: S1-45-R25-105
- Diameter: 45mm
- Length: 105mm
- Thread Type: R25
- Carbide Dimension: 14mm*8mm
- Water Holes: 1 on front, 4 on side
- Weight: 0.66Kg
