Drill S&R sds-max 40 x 800/ 920 mm Zentro (211004930)

Description

The S&R SDS-max Zentro Concrete Drill Bit is used for drilling perfectly straight holes in concrete, masonry and natural stone. When drilling holes with a depth of more than 450 mm, it is necessary to pre-drill with a shorter drill bit to a depth of at least 150 mm, then with a 450 mm drill bit, and then with 600 or 900 mm drill bits. The SDS-max Zentro drill has. A dynamically stable design that reduces vibration during drilling, which greatly increases hole making performance. A one-piece carbide tip with four cutting edges and patented chamfers for perfectly straight holes. The patented multi-channel KVS helix significantly increases drilling efficiency by rapidly removing slag from the hole and reducing vibration. Heat-treated surface with special polishing to reduce wear and increase the resistance of the drill to internal stress during operation. The S&R SDS-max Zentro Concrete Drill Bit is suitable for rotary hammers from 5 kg with SDS-max or two-groove chucks.