7pcs Carbide Four-Blade Serrated Drill Bit Set for Dry Drilling Porcelain Tile Ceramic Glass Marble Concrete Stone Hole Openner

7-piece carbide four-blade drill bit set This 7PCS Set includes high-performance drill bits designed for precision drilling in challenging materials like porcelain tile, ceramic, glass, marble, concrete, and stone.

Advanced cobalt steel alloy construction Made from durable Cobalt Steel Alloys, these bits offer excellent heat resistance and long-lasting sharpness, ideal for demanding dry drilling applications.

Perfect for DIY and woodworking projects Ideal as DIY Supplies, this set supports a wide range of home improvement and craftsmanship tasks, especially where precision and clean hole creation are essential.

Medium grit for balanced performance Featuring a Medium Grit type, these bits deliver efficient cutting with minimal chipping, making them suitable for both soft and hard materials.

Core drill bit for efficient hole opening Designed as a Core Drill Bit, this set enables clean, accurate hole creation in dense materials, reducing the risk of cracking or damage during installation.

Compact and lightweight packaging Packaged in a small, lightweight unit with dimensions of 10 x 6 x 3 cm and a weight of 0.050 kg, it’s easy to store and ship.

Origin from Mainland China, sold by piece Manufactured in Mainland China, each pack contains 1 piece of the drill bit set, sold as sell_by_piece for convenient ordering and use.