The advantage of HSS CO Step Drill Bit is that both diameters have the same flute characteristics, which keeps the bit from clogging when drilling in hard metals.
4-12mm HSS Step Drill Bits
5 Steps:4mm 6mm 8mm 10mm 12mm
Flute:Sprial
Shank:Triangle
Coating:Amber
Q1:Can you provide OEM service?
Answer:Yes,OEM is available.we have 30 years OEM experience
Q2:Can I have sample first?
Answer:Yes,we can provide sample before ordering,if you can afford the freight.
Q3:How about the payment?
Answer:Our payment is 30%TT deposit,balance before delivery.
Q4:How long for production?
Answer:According to the order sizes and quantity,normally in our stock list,we can arrange
Delivery within 7 days after received payment;if out of stock,it will takes around 30-45 days
For production.