Case of Alpen Widia Professional Concrete Drill Bits 8 Pieces. - Hard metal drill bit with Widia alloy (Tungsten Carbide) providing extreme hardness and durability. - High performance drill bit for use with different types of hammer drills with chuck housing. - Resistant to the hammer effect, thanks to novel vacuum hardening. - Robust thanks to the high strength tip. - Precise due to excellent centering properties. - Suitable for hammer drilling in concrete, walls and natural stone, as well as ceramic and marble. - Includes:- 1 professional widia concrete drill bit with a diameter of 3 mm. - 1 professional widia concrete drill bit with a diameter of 4 mm. - 1 professional widia concrete drill bit with a diameter of 5 mm. - 2 professional widia concrete drill bits with a diameter of 6 mm. - 2 professional widia concrete drill bits with a diameter of 8 mm - 1 professional widia concrete drill bit with a diameter of 10 mm. |