China Manufacturer High Quality HSS Twist Drill Bits Set

• Customized: Customized
• Length: Jobber-length
• Type: Twist Drill Bit
• Material: High Speed Steel
• Usage: Wood Drilling, Well Drilling, Metal Drilling
• Trademark: JG/OEM
• Model NO.: 29pcs
• Origin: China
• Production Capacity: 10000pieces/Day

Product Description

Product Name:  HSS TWIST DRILL BITS
Material : HSS
Process : Fully Ground
Shank Type:  Straight 
Surface Finish : Amber finish
Standard : DIN 338
Diameter : 1-13 mm* 0.5 
Features:  
The large increment of drill body makes the product not easy to break.
The hole with thick core is easier.
Quenching temperature within 5 degrees temperature control, more stable quality.
Raw material contains cobalt, so the hardness can be better.