Alpen Widia Long Life drill bit (one piece blister). -Diameter x length measurements: 6.00 x 200 mm. -Hard metal drill bits with widia alloy (tungsten carbide), providing great hardness and durability. -Indicated for percussion drilling and drilling of walls and natural stone. -High drilling speed thanks to the aggressive sharpening of the tip. -Great resistance and stability due to its precision milled slots. -Suitable for concrete, natural stone and brick.