4-39 mm HSS Titanium Coated Step Drill Bit Drilling Power Tools for Metal High

1. Scope of application

Use aluminum plate, plastic and wood plate within 4MM; Forced use beyond this range leads to drilling

The head is damaged, and the buyer should bear the lo. Please note~

2. Drill bit cooling

High temperature will be generated during operation, and water or coolant shall be added to cool the drill bit;

The main functions of the coolant include cleaning cuttings, preventing corrosion and extending the use of the drill bit

life.

The above tachometer is applicable to electric drill and bench drill. The larger the drill bit is, the lower the rotating speed is to avoid damage

Bad drill bit;

If the hole diameter to be drilled exceeds 14mm, it is recommended to use a bench drill;

Fai to use as required

The damage of the drill bit caused by use shall be borne by the buyer. Please note that~

Notes for users of lithium electric drill:

The 12V lithium electric drill on is not strong enough, so it is not recommended to use it. It is recommended to use 36V and 48V lithium electric drill

Notes for users of electric hand drill:

The larger the hole diameter, the lower the rotary speed of the electric drill, and the recommended rotary speed is within 1000RPM

Brand Story

About shping
Shping and Packaging All it will be double checked and well packed before sending.It will be dispatched within 2 business days after buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for e areas,it may take a little longer). 

Special Announcement:
Please fill in the correct and detailed consignee, address and phone number in the order. For fast and correct delivery.If you do not receive order within 30 working days,please feel free to contact Customer Service before leaving Negative and Neutral Feedback, we will do our best to help you resoe the problem.TaxNo, you will only pay what is quoted as total cost at checkout, no more. You are not expected to pay any additional duties or taxes. If you are asked by Customs or our logistic partner to pay duties, please contact our Customer Service .

Your 100% satisfaction is very ant to us
If the product is not on good condition, You can return this product within 14 working days, please contact customer service center before returning.FeedbackYour satisfaction is our first priorityIf you receive the order and it is in good condition,we would be grateful if you would leave us 5 star Positive Feedback for the transaction.