Classic four-blade drill bit for reinforced concrete with a blade resistant to damage upon contact with rebar Use for drilling in reinforced concrete, silicate, ceramic brick The double helix prevents the drill from jamming when discharging a large amount of excavated material The steel of the drill body is resistant to temperature expansion, so the drill does not lock in the chuck. • material: 40 Cr • working part material: YG-11 C • blade type: cross-cut, X-tip • spiral type: double • surface finish: sand blasted • tool holder type: sds plus
