Features: 
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100% brand new & high quality. 
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For lengthened drill & high concentricity. 
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Fully processed with the heat treatment & Enjoying high hardness. HRC48-50. 
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For boring holes manually, you are required to use the mortise chisel with hand drill, hammer and other tools.  
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Made of high-quality material, the drill bit is of long service time. 
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Specifications: 
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Material: HSS 
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Color: random colors delivery
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Total length: about 210 mm/ 8.27 in
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Clamping cylindrical diameter: about 19 mm/ 0.75 in
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Type: about 6.4mm / 8mm/ 9.5mm/12.7mm (0.25in/ 0.31in/ 0.37in/ 0.5in)
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(Note: The above sizes refer to the diameters of square hole drill bits. Due to the different measurement, please allow about 1-2mm/0.01-0.08in errors. If there is any discrepancy, the real item you received shall govern. ) 
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Packing list:
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1* Drill Bit
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