Cobalt Step Drill Bit 4.8 mm HSS M35 Spiral with Seven Steps Tip Length 86 mm Cylindrical Shank For Iron Steel and Stainless Steel
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The cobalt step drill bit with a diameter of 4.8 mm is a spiral drill designed for drilling into metal. It is made from high-speed steel HSS M35 with cobalt, which is suitable for drilling iron, structural steel, and stainless steel. The tip of the drill features seven small steps that smoothly transition to the full diameter. The spiral groove removes chips from the hole while drilling. The diameter of 4.8 mm is useful wherever a hole just under five millimetres is required.
The total length of the drill bit is 86 mm and the working part with the spiral measures 52 mm. The drill can handle sheets, strips, angles, and thicker metal profiles. The cylindrical shank can be clamped into the chuck of a cordless drill, handheld electric drill, or pillar drill. Detailed images capture the stepped tip and the shape of the spiral groove.
Compared to a standard spiral drill, this drill features seven steps at the tip with a gradually increasing diameter. The narrowest step creates a small hole in the metal, and the subsequent steps gradually enlarge it. The full diameter of 4.8 mm penetrates the material only after passing through all the steps. The hole is created in a single working step, eliminating the need for pre-drilling with a smaller drill. The traces of the individual steps in the wall of the hole are shown in the product photographs.
- Type – spiral drill with step tip
- Diameter – 4.8 mm
- Length of working part – 52 mm
- Total length – 86 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 of packaging – 1 piece of 4.8 mm step spiral drill
When working with steel and stainless steel, we recommend using cutting oil or coolant to protect the tip from overheating. Adjust the speed according to the diameter of the drill and the type of metal, and guide the drill perpendicular to the surface with even pressure. After use, clean the drill of chips and oil and store it so that the tip does not touch other metal tools. The drill is suitable for assembling metal structures, holders, and brackets, drilling holes for rivets and screws into sheets, or repairing metal furniture and garden equipment. It is also useful for modifying profiles and strips in a home workshop. Before starting to drill, mark the centre of the hole with a centre punch to prevent the tip from slipping on smooth metal.
The 4.8 mm drill with a step tip is a practical addition to the workshop and garage for metalworking. High-speed steel M35 with cobalt also drills into stainless steel. The seven steps at the tip gradually expand the hole to the full diameter. The cylindrical shank fits into standard drills. The packaging contains one drill with a diameter of 4.8 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
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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.
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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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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