SKU:WUB313
11-Step Titanium Coated Unibit Drill Bit | 3mm to 13mm Range | High-Speed Steel Step Drill
11-Step Titanium Coated Unibit Drill Bit | 3mm to 13mm Range | High-Speed Steel Step Drill
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Description
Description
This 11-step titanium coated Unibit step drill bit is engineered for precision hole drilling in thin sheet materials. Made from high-speed steel (HSS) with a durable titanium nitride coating, it provides extended life and smoother cutting action. The single-flute design offers superior control and reduced chatter, allowing you to easily step through each predefined size from 3mm to 13mm. The integrated hex shank ensures a secure, non-slip grip in any standard drill chuck, making it an essential tool for metalworking, electrical installations, plumbing, and DIY projects.
Key Features & Benefits
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Versatile Step Sizing:Â 11 precise increments (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13mm) eliminate the need for multiple drill bits.
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Titanium Coated HSS:Â High-speed steel core with a titanium nitride coating increases hardness, reduces friction, and extends tool life.
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Optimal for Thin Materials:Â Ideal for cleanly drilling sheet metal, stainless steel, aluminum, copper, brass, plastic, and laminates without snagging.
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Controlled Cutting Action:Â Single-flute design provides better chip evacuation and more controlled progression through each step compared to multi-flute bits.
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Secure Hex Shank:Â Prevents bit slippage in the drill chuck during operation, enhancing safety and precision.
Specifications
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Material:Â High-Speed Steel (HSS)
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Coating:Â Titanium Nitride (TiN)
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Step Sizes:Â 3mm to 13mm (11 increments)
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Shank Type:Â Hex (6-sided)
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Flute Design:Â Single-flute
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Primary Use:Â Thin sheet metal, plastic, electrical enclosures, HVAC, automotive, and general fabrication.
Shipping
Shipping
Every order at TINKR promises fast shipping to your door, anywhere in New Zealand. Within 1-3 business days. Courier pickups Monday - Friday. Excluding public holidays.
Our standard delivery requires a signature upon receipt, however type any delivery instructions in the box provided during the TINKR check out on how you want your order delivered. For example, No signature required or leave on front porch etc.
How fast is Tinkr's Shipping?
How fast is Tinkr's Shipping?
While it is possible for many Auckland orders to be delivered the same day, delivery estimates are; North Island - Overnight. South Island and Rural - extra 1-2 days

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FAQs
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What payment methods can I use?
We can take payment from most major credit cards - like Visa and Mastercard. We can also offer AfterPay and manual bank transfer.
Are the auto parts on your website genuine?
We only partner with leading global manufacturers and suppliers to ensure our customers get the best product AND price.
Do you offer warranties on your auto parts?
We do offer warranties on most parts! Refer to the individual part information or speak to a member of our team to learn more.
Customer Reviews
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Thank you - so quick in delivery with my order. I was expecting at least another 3-4 days to arrive. Great website easy to order with the illustrations, saving a lot of guess work when choosing your items. Well done!
William -
We got the part shipped within a day all the way down to the West Coast! I accidentally ordered the wrong article and they helped me out and replaced it straight away. You guys are awesome!
Anna -
Chuck & Greg from Tinkr were very helpful finding the correct auto transmission filter kit for us, fast & efficient, overnight delivery at a very reasonable price $127, both Repco & Supercheap quoted $439. This is first time we have dealt with Tinkr Limited and we would not hesitate to purchase from them again. Thanks for the fantastic service!
Del -
I have made multiple purchases from this company, and their service consistently exceeds my expectations. Last week, I urgently needed some parts and, based on my previous positive experiences, I chose TINKR once again. As expected, their service was exceptional. A special thanks to Greg at TINKR for a job well done.
Gary
We Solve The Auto Parts Challenges Others Can't
TINKR is your most comprehensive New Zealand owned auto parts store. With over 150,000 car parts, accessories & tools, to suit a huge range of passenger cars, 4x4s and commercial vehicles. Whether you're after a cambelt, a fan belt, or a seat belt, for a Toyota Corolla, a Mitsubishi Lancer, or a trusty Mazda Familia - TINKR has it covered.
11-Step Titanium Coated Unibit Drill Bit | 3mm to 13mm Range | High-Speed Steel Step Drill