SDS-plus drill bit set
HERMAN QDC-22
5 drill bits in set

Drill head made of a single carbide insert with a centering tip:
proven stable design for precise drilling of holes

Carbide insert bits at 130˚:
It allows fast drilling with minimal side damage to the drill bit when hitting steel reinforcement in concrete

Drill body made of high-strength Cr-Ni-Mo steel, with blast-treated surface:
high resistance to lateral stresses, breakage of the drill bit during erection is very unlikely

Asymmetric double helix with initial run-up directly at the drill head:
It reduces drilling friction and contributes to increased drilling speed by immediately diverting the drilled material away from the drill head

PGM mark on the drill shank:
guarantee of compliance of the drill diameter tolerance with the standard for drilling precision holes for dowels and anchors

Recommendation:
Lubricate the drill shank with grease. This will prevent premature wear and prolong the life of the quick-release system in your drill hammer

Markings:
The markings SDS-plus and SDS-max are trademarks of Robert Bosch GmbH, Stuttgart, BRD.