Alpen Drill Bit Case Pack (3 Porcelain Drill Bits and 5 Multipurpose Drill Bits)

Alpen Drill Bit Case Pack (3 Porcelain Drill Bits and 5 Multipurpose Drill Bits) Multipurpose Drill Bits: - Measurements: " 4 mm. / "5mm. / "6mm. / "8mm. / "10mm. -Application: high flexibility and precise drilling, even if the drill bits are changed in different materials.  For rotary drilling in pavements, masonry, metal, wood and plastic. -Main characteristics: - Multipurpose. -Hard metal plate, very sharp edges, therefore also very suitable for metals. -Patented quadruple stepped profile, Quick removal of debris during drilling in masonry and concrete. Porcelain Drill Bits: - Measurements: " 6 mm. / "8mm. / "10mm. -Diamond drill bit to start drilling hard materials. -Application: For extremely hard stoneware tiles with a Mohs/Ritz hardness of 9 and glass and porcelain.  Refrigeration is not necessary.  Not suitable for hammer drilling. -Without drilling difficulties, get a precise hole thanks to the centering tip. -Carbide plate integrated into the cutting plate to increase resistance to breakage. -The red ring indicates the optimal drilling depth. -Shortened neck to reduce torque forces, reducing vibrations and increasing service life. -Non-slip stem, preventing rotation in the drill chuck and transmitting optimal torque.