Concrete Drill Bit with 350mm Round Shaft SDS Plus Concrete Saw Hole Drill Bit for Cement Stone Wall with 30/40/50mm Expansion (Silver)

This complete drill set contains three high performance drill bits (diameters 30mm, 40mm and 50mm) with suitable SDS Plus chucks, tungsten carbide precision guide bits and a heavy duty 350mm extension rod. This box is specially designed to make clean and precise holes in various masonry applications. Ideal for drilling brick walls (solid and hollow), concrete blocks, red bricks, aerated concrete and light masonry structures. Perfect for installing air conditioning pipes, ventilation systems, washing machine drain pipes and other domestic or construction penetrations. Designed exclusively for masonry materials; never use on steel, tile, natural stone or reinforced concrete. Carbide tips require adequate cooling; always use water when drilling to prevent overheating and premature wear. Featuring brazed tungsten carbide teeth with reinforced welded joints for maximum durability. The segmented design of the blade, with its alternating teeth, evenly distributes cutting efforts, reducing vibration and preventing edge chipping during work. The included centering drill bit ensures accurate hole positioning, while the SDS Plus extension allows deep wall penetration up to 350mm. Special anti-vibration grooves minimize drill movement for sharper holes in fragile masonry materials.