S&R High Performance Hammer Drill.
Very long service life due to high quality carbide plate, reinforced KVS-spiral, fast removal of drill dust
“Destruction effect” by means of reinforced destruction teeth at the tips Causes microcracks in the drilled material Provides a noticeably improved drilling speed Larger patented reinforcement chamfer Increased reinforcement chamfer + 35% Optimized drill behavior in reinforcement strikes Reduced probability of hooking in the iron reinforcement striker Centering point Precision drilling

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