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Features:
Drill bit is made from carbon steel and countersink is made from good quality 45# steel which ensures a long service life.
Combined drill bit and countersink bit is great for drilling chamfering deburring and countersinking.
There are 10 sizes of 3mm 3.5mm 4mm 4.5mm 5mm 5.5mm 6mm 7mm 8mm 10mm and you can choose the one you need.
Five flutes design provides small chip loads and quicker removal it can discharge wood sawdust more rapidly and smoothly.
Suitable for drilling holes on board of low hardness such as wood plastic and other soft material.
Specifications:
Material: Carbon steel(drill bit) 45# steel(countersink)
Countersink Flute: 5
Drill Bit Diameter: 3mm 3.5mm 4mm 4.5mm 5mm 5.5mm 6mm 7mm 8mm 10mm 3-10mm(3/4/5/6/7/8/10mm) 3-6mm(3/4/5/6mm)(Optional)
Countersink Diameter: 15.8mm
Hex Key Size: 55 x 20mm
Quantity: Your choice
Note:
There are only 7pcs in 3-10set and only 4pcs in 3-6set.
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