About this item

• [Industrial Grade Material]:Made of selected high-strength alloy steel materials that prevent bit cracking and provides a longer life. Tungsten carbide tip can easily penetrate various materials, the hardness is higher than the ordinary drill bit.
• [Size]:The masonry drill bit set includes 1/8' (3 inch length - 2 included), 1/4' (4' length - 2 included), 1/4' (6' length - 2 included), 5/16 (6' length), 3/8' (6' length - 2 included), and 1/2' (6' length). placed in a hard plastic container.
• [Unique Design]: U Type Slot design enables fast and efficient dust removal, the 3-flat shank allows the drill bit easy to plug and to be held tightly. Suitable for general drill, electric drill, hand drill and bench drill.
• [Widly Used]: GMTOOLS Concrete drill bit set, ideal for drilling fastener holes in bathroom tiles, or wall mirrors, can easily drill holes on tile, concrete, brick, glass, ceramic, and wood, please cool with water and control the speed when drilling.
• [Quality Commitment]: If for any reason you are not satisfied with your purchase, please contact us. We provide 30-day money back. 100% Satisfaction Guarantee for risk-free shopping!