Do they have a hex shank?

So I am not sure of the brand as the box does not give that information but mine were 32mm and had 3 flats ground into a round shaft, perfect for very positive attachment to a drill chuck. I use them dry to drill conduit holes in cement blocks. They work great though they are a little shallow so I chipped out the core to go deeper.

Is the circle that remains after drilling still usable? I need to be able to use the circles. Thanks!

I was drilling into wine bottles.

What is the warranty on these bits?

No warranty. Because the masonry hole saw is a one-time drilling tool and doesn't provide warranty service. On the other way, it is recommended to add water during the drilling process, to extend the life of diamond hole saw.

Desertcart Logo

Deliver to Philippines

For best experience Get the App

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan
KOREA

Customer Services

About Us

Customer Support

Description

🔧 Drill Like a Pro—Unleash Your Inner Craftsman!

USER FRIENDLY DESIGN - No pilot drill needed; simply attach to your drill and start creating.
CLEAN CUTS EVERY TIME - Experience minimal cleanup with precision cutting that requires no further work.
PRECISION ENGINEERING - Achieve flawless cuts with a 20mm outer diameter for perfect hole sizes.
VERSATILE APPLICATIONS - Ideal for granite, marble, tile, and glass—your go-to tool for all stone projects.
EFFICIENT COOLING SYSTEM - Add water for a smooth drilling experience and to prolong bit life.

The JINGLING 2Pcs 20mm Diamond Hole Saws are expertly designed for cutting through tough materials like granite, marble, and glass. With a 20mm outer diameter and a 5/16 inch hex shank, these drill bits ensure clean, precise holes without the need for a pilot drill. Ideal for both professional and DIY projects, they require water for cooling, making them efficient and easy to use.

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.