Excelente producto, en mi caso compré la broca de 8 mm de diámetro, que tiene una longitud usable de unos 10 cm. He podido hacer agujeros en hormigón duro sin problema. Muy buena calidad y precio muy razonable.

The bit strong and sturdy did not chip or break through concrete stairs

Drill bits come in two varieties. "Cheap and nasty" and "quality, expensive". The Bosch drill bits fall into the latter category. HOWEVER, these replace my 20+ year old set so to say these are expensive is a bit of a mistake. Taken over a 20 year lifespan they are as cheap as chips because, believe me, you won't be buying new drills for quite some time.

Top Ware, seriöser Verkäufer!

Buino