impact masonry drill bits metal<p>Product specifications:</p><p>Model:EK-005</p><p>Material: YG8 hard alloy</p><p>Colour：Gold</p><p>7-piece:</p><p>1/4 (3.94 inch - 4 included),commonly used in home applications.</p><p>5/16(4.53 inch - 1 included)</p><p>3/8 (4.72 inch - 1 included)</p><p>1/2 (4.72 inch - 1 included)</p><p>Suitable for: masonry wall, cement wall, concrete, tile, wood, metal, stainless steel, aluminum alloy, wood, bubble brick, etc.</p><p>Water is recommended for drilling on: stainless steel, glass, ceramic tile, marble, granite etc. Carbide drill bits for glass, bottles(The drilling head can resist high temperature up to 1000 ℃. However, long session of work over 1000 ℃ may cause the head to burn.)</p><p>Lithium drill lower than 24V is not recommended.</p><p>Please change position when there is reinforced concrete ahead; drilling on it will damage the drilling edge.