Vacuum brazed stepped diamond core drill bit

Three-in-one size design: 20mm/35mm/50mm are available to meet different hole diameter requirements

Drilling, chamfering and polishing various materials, including concrete, tiles, marble, granite, quartzite, and  microcrystalline stone.

M14 or 5/8"-11 connection available

Shipping Policy: 

All orders are processed in 3-5 business days.

Standard shipping takes 10-15 business days.

Free shipping on orders over $100.

International shipments are subject to customs fees, duties and taxes paid by the buyer.

Tracking information will be provided once your order is shipped.

Return Policy: 

We accept returns within 30 days upon delivery.

Items must be new, unused and in original packaging.

Custom, modified or worn diamond tools are non-returnable.

Buyers are responsible for return shipping for non-defective items.

Defective products will be offered replacement or full refund after verification.

Payment Security:

Your online transactions are protected by industry-standard SSL encryption, keeping your private and payment information safe during checkout.

Privacy Policy:

We are committed to protecting your personal privacy. Your data will never be sold or shared with third parties without your explicit consent, except in compliance with legal requirements.