High-concerned chemical: None
Brand Name: BB
Origin: Mainland China
is_customized: Yes
DIY Supplies: Metalworking
Material: Tungsten Carbide
Type: Twist Drill Bit
Use: Metal Drilling

TISIN Nano Coating

The blade is coated with ALTIN (nano-coating), This reduces the frequency of tool changes, enhances machine utilization rates, and saves on production time.Heat insulation and wear resistance, high hardness milling protection of drill bit cutting edge, increased service life
Steel Use:AlTiSiN Coating,Iron Plate , Stainless Steel ,Die Steel, Quenched Steel,etc.
Aluminum Use:Mirror Gloss,Aluminum Alloy,Aluminum Material,Magnesium Alloy,Copper,etc.

Double Helix Design

Rapid Chip Removal
The blade features a double helix chip evacuation groove design, fully ground blade angle, and rapid chip removal during high-speed operation.

All-Grind Cutting Edge External Cooling Design

The drill bit features a fully ground cutting edge for convenient cutting during processing, and the external cooling design enables effective and continuous operation.

Ultrafine Carbide Base Material

Good toughness and high hardness. Hard Carbide material alloy features high compatibility, high hardness, and high strength, ensuring smooth and fast cutting, making it a specialized milling cutter material for high-speed cutting applications

Universal Round Shank Design

Anti-slip design at the tail, close to the chuck
Tighter grip without slipping

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Size guide

Information &

Conversion Table:

Size	US Size	UK Size	EU Size	Japan Size
XS	4	6	36	22
S	6	8	38	24
M	8	10	40	26
L	10	12	42	28
XL	12	14	44	30
XXL	14	16	46	32

Note: Sizes may vary slightly between different brands and manufacturers. It's recommended to refer to specific sizing charts provided by the brand for accurate measurements.

Frequently

Asked

Questions

Product Warranty

Our Product Warranty ensures peace of mind with every purchase, offering coverage against manufacturing defects and faulty materials. With our warranty in place, you can shop confidently, knowing that your investment is protected. Whether it's a year or more, our warranty duration varies by product, providing comprehensive support throughout its lifespan. In the rare event of an issue, our dedicated support team is ready to assist you with prompt resolutions and hassle-free replacements. Trust in our commitment to quality and customer satisfaction with our robust Product Warranty.

Product Care Instructions

Our Product Care Instructions provide essential guidance on how to maintain and prolong the lifespan of your purchase. From cleaning techniques to storage recommendations, these instructions offer valuable tips for ensuring optimal performance and appearance. Following these care instructions diligently helps preserve the integrity of your product, ensuring it remains in top condition for years to come. Whether it's delicate fabrics or sensitive electronics, our comprehensive care instructions cater to a wide range of products, empowering you to take the best care of your investment. Trust in our expert advice to keep your items looking and functioning their best.

Product Order Modifications

Need to make changes to your order? Our Product Order Modifications feature allows you to adjust order details such as shipping address, product quantities, or payment methods before processing. Enjoy the flexibility to tailor your order to your exact specifications even after it's been placed. Whether you've had a change of heart or simply need to update information, our intuitive modification process ensures a seamless shopping experience. Simply log into your account, locate your order, and make the necessary adjustments hassle-free. Experience convenience and control over your purchases with our easy-to-use Order Modifications feature.

Product Technical Support

Our Product Technical Support ensures you receive expert assistance with setup, troubleshooting, and any technical queries you may have. Our dedicated team of support professionals is available to provide personalized guidance and solutions tailored to your needs. Whether you're experiencing issues with installation, configuration, or software compatibility, we're here to help you every step of the way. With prompt responses and comprehensive assistance, we strive to resolve your technical issues efficiently, minimizing downtime and maximizing productivity. Trust in our reliable Technical Support to keep your products running smoothly and efficiently.

Product Wholesale & Bulk Orders

Looking to make large quantity purchases? Our Product Wholesale & Bulk Orders service offers competitive pricing and flexible solutions to meet your needs. Whether you're a retailer, business, or organization, we cater to bulk orders with ease and efficiency. Enjoy discounted rates and customized packages tailored to your specific requirements, ensuring maximum value for your investment. Our dedicated sales team is ready to assist you with personalized quotes, product recommendations, and logistical support to streamline the ordering process. Trust in our expertise and reliability to fulfill your wholesale and bulk order needs with precision and professionalism.

Shipping & Delivery

All estimated shipping times are in addition to fulfillment times, We offer a next working day delivery for orders placed before 6:30 p.m. Monday to Friday. Orders placed after this will be delivered within two working days. This excludes Saturday, Sunday and holidays. Appointed is not responsible for any customs/duties related to international orders. We are unable to calculate charges prior to your order being delivered, and recommend checking with your local customs office for more information. Shipping fees will not be refunded if you refuse these charges.

Free destination delivery above $100
Europe 1 – 3 days Free
United States 4 – 6 days Free
Asia 3 – 6 days Free
Africa 5 – 7 days Free
Australia 3 – 5 days Free

Returns & Refunds

We have a 14-day return policy, which means you have 14 days after receiving your item to request a return, To be eligible for a return, your item must be in the same condition that you received it, unused, and in its original packaging. You’ll also need the order confirmation, order number, or proof of purchase. We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.

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BB Micro Small External Drill Long Cutting Length 50mm Shank Diameter 4mm 1mm~2.95mm