Spiral Drill Bit with Step Tip 3.4 mm HSS M35 Cobalt Seven Steps Total Length 65 mm Cylindrical Shank for Iron Steel and Stainless Steel
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The metal drill bit with a diameter of 3.4 mm combines a classic spiral design with a step tip. It is made of high-speed steel HSS M35 containing cobalt, suitable for drilling iron, steel, and stainless steel. The tip features seven small steps that expand towards the shank to the full diameter of the drill bit. The spiral groove removes chips during operation from the drilled hole. It finds application in workshops, during installations, and in home repairs of metal parts.
The length of the spiral working part is 36 mm and the total length of the drill bit is 65 mm. The drill bit is clamped by the cylindrical shank into a standard chuck of a hand drill, cordless drill, or pillar drill. The diameter is marked directly on the shank, making it easy to identify the drill bit among other tools. The seven steps on the tip are clearly visible in detailed photographs, where it is evident how the tip gradually expands.
Compared to a standard spiral drill bit, this model has seven steps on the tip, whose diameter increases towards the shank. The smallest step at the very tip creates an initial hole in the metal, and each subsequent step slightly enlarges it until the full diameter of 3.4 mm penetrates the material. Thus, the hole is created in several stages during a single pass of the drill bit. The individual steps and the marks they leave on the wall of the hole are clearly visible in detailed images. The drill bit is intended for metallic materials, primarily for iron, structural steel, and stainless steel, and can be used in both hand and pillar drills.
- Type – spiral drill bit with step tip
- Diameter – 3.4 mm
- Length of Working Part – 36 mm
- Total Length – 65 mm
- Material – high-speed steel HSS M35 with cobalt content
- Tip – seven steps gradually transitioning to full diameter
- Shank – cylindrical
- Usage – drilling into iron, steel, and stainless steel
- Contents – 1 piece of 3.4 mm step spiral drill bit
When working with steel and stainless steel, use cutting oil or coolant to prevent the tip from overheating unnecessarily. Adjust the speed according to the small diameter of the drill bit and the hardness of the material, guiding the drill bit perpendicular to the surface and not overloading it with excessive pressure. After finishing work, remove chips from the groove and store the drill bit in a case or box where the tip will not be damaged.
The 3.4 mm spiral drill bit with step tip will enhance your toolkit for working with metal. HSS M35 steel with cobalt is also suitable for drilling into stainless steel. The seven steps on the tip gradually enlarge the hole to full diameter. The cylindrical shank fits into a standard drill chuck. The packaging contains one drill bit with a diameter of 3.4 mm.
Delivery
Delivery to address€1.99
Estimated delivery: 23 November – 4 December
Shipped from China
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Returns and Exchanges
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Returns30 days to return without giving a reason
Withdrawal period30 days from receipt of the goods
Deadline to send the goods backWithin 14 days of withdrawing from the contract
Return shipping costsYou pay the postage for sending the goods back to Spain. With An Post (Standard Post), returning a parcel of up to 2 kg to Spain costs about €30. We charge no other fee.
RefundWithin 14 days of your notice of withdrawal, using the same payment method you used for the purchase. If you return the whole order, we will also refund the delivery cost.
Crediting of the amountUsually 2–10 working days, depending on the payment method
Product conditionYou may unpack the goods and try them as you would in a shop, and you can return them even without the original packaging
Returns addressQX-BOX AEMALL RETURN
Rotonda Rene Descartes, Parcela 101 – Nave 3
28070 Alcala de Henares, Madrid
SpainReturns centre in Spain operated by Qxbox, an e-commerce logistics provider and logistics partner of the sellers on our platform.
How do I return goods?
- Email us at info@lunzo.ie with your order number and the items you are returning.
- Pack the goods and send them by post to the returns address in Spain.
- Send us the proof of dispatch with the tracking number – this lets us refund you without waiting for the parcel to arrive.
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Did the goods arrive damaged, do they not work, is something missing from the parcel or do they not match the description? We will sort it out.
Period for claiming a faultUp to six years from delivery of the goods
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- We will assess it and suggest a solution. Photographs are usually enough – please do not send the goods back until you have received instructions from us.
- We will settle your claim within 30 days at the latest – with a new item, a price reduction or a refund.
If the goods need to be sent back, we will refund the postage for a valid claim (just provide the receipt).
ExchangesA different size, colour or variant
Write to us within 30 days of receipt at info@lunzo.ie with your order number and the variant you are interested in. We usually reply within 24 hours.
If the variant is available, we will send you instructions for the exchange. You pay the cost of sending the original item back; the new variant will be sent to you at no further charge.
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About the seller
This product is sold and shipped by an external seller. LUNZO guarantees you a safe purchase: online payments go through a secure payment gateway, and you handle your order, returns and complaints with us.
The following information has been provided by the product seller, who is responsible for its accuracy. The seller acts as a trader.
Seller:
Gansu Constar Technology Group Co., Ltd.
Address: No.10, Chuangxin South Road, Baiyun District, Baiyun, Gansu, China
E-mail: ksdjt@foxmail.com
Telephone: +86 156 9392 3686
Manufacturer:
Gansu Constar Technology Group Co., Ltd.
Address: No.10, Chuangxin South Road, Baiyun District, Baiyun, Gansu, China
E-mail: ksdjt@foxmail.com
Telephone: +86 156 9392 3686
EU responsible person:
BioDomi GmbH
Address: Schokoladenring 13, 65795 Hattersheim am Main, Germany
E-mail: arcontact@biodomieurope.de
Telephone: +49 178 5749814
All products from this seller